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Best Merino Wool Base Layers – 2021 Edition

last updated: Dec 17, 2020

Base layers lock in your body heat and keeping you warm when exposed to extremely cold temperatures. If you love your outdoor winter sports or simply feel the cold over the winter months, base layers are a great way of keeping you warm and allowing you to get outside without feeling the chill. The best base layers on the market are made from Merino wool. The material is comfy, lightweight, and contains many natural properties.

Merino wool is also a fantastic insulator! With so many merino wool base layers to choose from, we have reviewed and selected the best Merino wool base layers on the market now and have listed them below for you to see. 
 

In a Hurry? The test winner after 13 hrs of research

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Icebreaker Oasis 200
91.3/100 our score
Materials
94
Features
90
Durability
93
Value
88
Icebreaker Oasis 200
Why is it better?

Soft on the skin

200 weight

Versatile warmth

Many color choices

In a Hurry? Editors choice:
Icebreaker Oasis 200
Test Winner: Icebreaker Oasis 200
Amazon Link
Researched Sources
16
Researched Sources
Reviews Considered
1.3k
Reviews Considered
Hours Researching
13
Hours Researching
Products Evaluated
16
Products Evaluated
Last Updated:
Ana
By Ana:

We added new picks that reviewers love and recommend for 2021!

Sorting Options
Materials Features Durability Value By Default
Rank
PictureProduct
Name
Rating
Shops
#1
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91.3
Materials
94 %
Features
90 %
Durability
93 %
Value
88 %
Price Comparison Last Updated (25.07.21)
#2
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89.8
Materials
91 %
Features
87 %
Durability
90 %
Value
91 %
Price Comparison Last Updated (25.07.21)
Amazon Link
#3
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89.5
Materials
93 %
Features
87 %
Durability
90 %
Value
88 %
Price Comparison Last Updated (25.07.21)
Amazon Link
$44.99
#4
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89.3
Materials
90 %
Features
87 %
Durability
89 %
Value
91 %
Price Comparison Last Updated (25.07.21)
Amazon Link
#5
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89
Materials
90 %
Features
88 %
Durability
90 %
Value
88 %
Price Comparison Last Updated (25.07.21)
#6
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.5
Materials
91 %
Features
87 %
Durability
90 %
Value
86 %
Price Comparison Last Updated (25.07.21)
#7
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.8
Materials
87 %
Features
85 %
Durability
90 %
Value
89 %
Price Comparison Last Updated (25.07.21)
Amazon Link
$35.00
#8
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.5
Materials
91 %
Features
87 %
Durability
88 %
Value
84 %
Price Comparison Last Updated (25.07.21)
#9
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.3
Materials
88 %
Features
86 %
Durability
86 %
Value
89 %
Price Comparison Last Updated (25.07.21)
Amazon Link
$25.18
#10
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.8
Materials
90 %
Features
87 %
Durability
88 %
Value
82 %
Price Comparison Last Updated (25.07.21)
Amazon Link
$74.99
#11
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84.5
Materials
84 %
Features
85 %
Durability
85 %
Value
84 %
Price Comparison Last Updated (25.07.21)
Amazon Link
$19.99
#12
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84
Materials
83 %
Features
85 %
Durability
84 %
Value
84 %
Price Comparison Last Updated (25.07.21)
Amazon Link
#13
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
83
Materials
83 %
Features
82 %
Durability
84 %
Value
83 %
Price Comparison Last Updated (25.07.21)
Amazon Link
$59.99
#14
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
82.3
Materials
82 %
Features
84 %
Durability
82 %
Value
81 %
Price Comparison Last Updated (25.07.21)
Amazon Link

Top 14 Merino Wool Base Layers

1. Icebreaker Oasis 200

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91.3
Icebreaker Oasis 200
Icebreaker Oasis 200
Amazon Link
Materials
94
Features
90
Durability
93
Value
88
best offer for today
more shops
Pros:

Soft on the skin

200 weight

Versatile warmth

Many color choices

Cons:

Some complaints about the length of the sleeves

Icebreaker has been in the business of keeping you warm since 1995. They have a very close relationship with the farmers in New Zealand and are dedicated to the welfare and happiness of the sheep that are used to create the Merino wool clothes. This base layer shirt is versatile and stylish enough to be worn on its own or layered for added warmth. This shirt is available in many different colors and styles, including solid, striped, and two-toned.

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Materials
This long sleeved gem is made from 100% Merino wool. It boasts a 200-weight and it great for mild to chilly weather - it’s actually right in the middle of the charts for moderate to freezing weather. Like all Merino wool clothing, this shirt has amazing wicking power and will keep you dry even when you dip into that warm coffee shop on a cold day. This is a wonderfully versatile shirt that can be worn on its own, or layered to provide more warmth.

Features
Besides all of the benefits that come with any garment made with Merino wool, Icebreaker added in a few features of their own. The seams of the shoulders are offset to avoid chafing between your shirt and backpack and to add comfort.

This is a great shirt for travel as it is moisture wicking and doesn’t easily absorb odors. When the time does come to wash it, you’ll also be happy to know that it dries very quickly.

Durability
As with any wool item, you already know that this is a durable shirt. With proper care and washing, this shirt will be a staple piece in your wardrobe for years to come.

Value
Pricewise, it varies depending on which color you choose. At first glance, it is a quite expensive shirt. After learning more about the features, durability, and the integrity of the company, we think it’s a great investment. Icebreaker is committed to the well-being of animals and the environment.

2. Meriwool Midweight Bottom

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89.8
Meriwool Midweight Bottom
Meriwool Midweight Bottom
Amazon Link
Materials
91
Features
87
Durability
90
Value
91
best offer for today
Amazon Link
Pros:

Affordable

Durable

Moisture wicking

Comfortable

Cons:

Could offer more color and pattern options

MERIWOOL's Base layer Bottom offers you a durable product with high-quality Merino wool materials that will keep you warm and comfortable on all of your runs. You’ll get plenty of durabilities packed into your product, and it will give you a lot of long-lasting protection. Plus, this product falls in the affordable price range, which means it is a great option if you are shopping on a budget. These bottoms are soft, comfortable, and very warm.

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Materials
This option is designed from 100% all natural superfine 18.5-micron Merino wool for extra comfort and durability. The materials are very high-quality and help ensure that you’ll have this product for a long time. They are also designed to breathe and ventilate well, meaning that the fabric is quick-drying and moisture wicking, and you’ll never feel like you are overheating in them. With a soft feel and a lot of comfort, this is a nice product to have.

Features
You get a 30-day satisfaction guarantee with this option, which is a nice bonus, and a nice pair of bottoms that will keep you comfortable and warm. These pants are designed to be breathable, moisture wicking, and quick drying, so you never have to worry about sweat build-up on the go. You’ll get anti-odor and anti-bacterial protection as well. This pants can also be thrown in the washing machine and dryer for easy cleaning maintenance.

Durability
MERIWOOL's pants are manufactured for durability and warmth, giving you long-lasting comfort. This product has a lot of great features packed into it, including its high-quality 100% Merino wool materials. You’ll get a bottom layer that offers a lot of comforts and will boost your warmth with its insulation, and it also feels very comfortable. The material is also moisture wicking, and that helps to extend the life of the product. So, these are a nice, durable product option.

Value
This option is priced affordably for a high-quality merino wool product and works great if you are shopping on a budget. You’ll get a long-lasting, durable design that is made to wick moisture and keep both odor and bacteria down. Plus, this product is also made for comfort and warmth, and you’ll get a lot of reliability there for a long period of time. Since you’ll get plenty of use out of it, they make a nice value purchase.

3. Merino.tech Thermal Shirt

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89.5
Merino.tech Merino Wool Base Layer
Merino.tech Merino Wool Base Layer
Amazon Link
Materials
93
Features
87
Durability
90
Value
88
best offer for today
Amazon Link
$44.99
Pros:

Made with moisture-wicking properties 

Odor resistant

Lifetime warranty 

Affordable

Available in a variety of colors and sizes 

Cons:

or long-lasting durability only hand wash and air dry

Merino. tech Merino wool shirts are the perfect base layer. They are affordable, great for layering, and easy to wash. Suitable to wear all year round, the shirt is itch-free, offers UPF 50+ protection, and comes with a lifetime warranty so there is plenty to like!

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Materials
The long-sleeved shirt is made from 100% superfine 17.5-micron Merino wool that is free from itchiness, making it suitable to wear all day long. The material will also not rub against your skin, bunch up, or cause you to overheat.

Features
This Merino wool shirt features moisture-wicking properties that work by absorbing moisture from your skin and pushing it to the surface of the shirt, keeping you dry. The material is odor resistant so will keep you smelling fresh for long periods. The base layer also works by helping to regulate your body's temperature, so you never feel either too hot or too cold.

The men’s base layer offers UPF 50+ protection and comes in 31 different colors and a variety of sizes. The thermal shirt comes in 3 different thicknesses including lightweight (165g), midweight (230-250g), and heavyweight (320+g). 

Durability
For long-lasting durability, the preferred method of washing and drying this thermal shirt is by hand and air drying. The piece also comes with a lifetime warranty. 

Value 
If you have a set budget to spend on your thermals this merino wool base layer is being sold for an affordable price making it an amazing buy. 

4. Kari Traa – Half Zip Thermal Shirt 

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89.3
Kari Traa – Half Zip Merino Wool Blend Thermal Shirt 
Kari Traa – Half Zip Merino Wool Blend Thermal Shirt 
Amazon Link
Materials
90
Features
87
Durability
89
Value
91
best offer for today
Amazon Link
Pros:

Comfortable

Stylish design 

Stretchy and soft

DriRelease technology

Available in a range of colors and sizes 

Cons:

Expensive 

Sizing is a little large 

Kari Traa is best known for being a champion freestyle skier, with three Olympic medals to her name. More recently, she is also known for being the creator of one of the fastest-growing sports brands in Europe. Kari has created an extensive brand of clothing for active girls that feature unmistakable designs and a strong color palette, all produced to a high quality.

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Materials
Featuring a functional DriRelease technology and made from 100% Merino wool, this shirt is exceptionally warm and quick drying. 

Features
The thermal shirt has been designed using panels of merino wool that fit perfectly around your body. The close slim fit also helps by improving your athletic performance. Extended cuffs and thumbholes provide extra coverage and support. The shirt comes in 4 different colors as well as a range of sizes. 

Durability
The Merino wool is exceptionally durable and can be machine washed using cold water. For best drying results hang to dry and do not use fabric softener. 

Value 
Sold for a high price, this thermal shirt from Kari Traa is one of the more expensive Merino wool items in our collection. Very stylish and warm, it is a fantastic option however it may be too expensive for some budgets. 

5. Arc'Teryx Satoro

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
89
Arc'Teryx Satoro
Arc'Teryx Satoro
Amazon Link
Materials
90
Features
88
Durability
90
Value
88
best offer for today
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Pros:

1/2 zip

Slim fit- great for layering

Allows for great arm mobility

Cons:

Runs small

Slim fit- shows everything

This 1/2 zip fitted layer from Arc'Teryx provides a slim fit, breathability, wicking power, and great mobility. The armpits of the shirt are gusseted, allowing you to have a full range of motion while indulging in any winter sport. The only real complaint that we see with this base layer is the fact that it runs small.

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Materials
The Satoro from Arc’Teryx is made from a blend of 81% Merino wool, 12% Nylon, and 7% Elastane. This blend provides you with the best qualities of each fabric. The Merino wool keeps you warm, the Nylon assists the Wool in moisture-wicking and keeping you dry and airy, and the Elastane provides a more appealing bodily fit. The slim fit can be seen as something great or terrible, depending on the person. If you plan to use the shirt alone, just know that the materials are not very forgiving and you will be able to see every ab and/or fat roll.

Features
This base layer was designed with activity in mind. The underarms are gusseted and the sleeves are articulated for high mobility. On the men’s version, there is one zippered chest pocket, which is a great place to store cash, cards, or keys. For both men and women, there is a ½ zip which allows for comfort and easy body temperature control. The weight of this jacket is 8.1-ounces.

Durability
There have been no durability complaints with this base layer. The Merino wool and Nylon are both very strong materials. This is a great layer to pack in any bag and bring anywhere that the weather might be cold. With proper care and washing, we don’t see this baselayer giving out on you anytime soon.

Value
As with many Arc’Teryx items, this price of this baselayer is quite high. However, the peace of mind that comes with an Arc’Teryx item, the durability, and warmth will help to ease your concerns.

6. Smartwool NTS Mid 250 Bottom

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.5
Smartwool NTS Mid 250 Bottom
Smartwool NTS Mid 250 Bottom
Amazon Link
Materials
91
Features
87
Durability
90
Value
86
best offer for today
more shops
Pros:

Affordable

Durable

Comfortable

Moisture-wicking

Cons:

Not many color choices

These feature an affordable price option that is a great choice if you are shopping on a budget. You’ll get a well-designed product that is soft and comfortable and provides a lot of great temperature regulation when the weather is cold outside. With a nice, breathable design and technology that is moisture-wicking, you get a lot of great features with these nice bottoms. Plus, with their durability, you’ll be able to use them reliably for a long time.

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Materials
The bottom gives you a slim fitting option in nice thermal bottoms that are built out of 100% Merino wool fabrics. You get flat-locked seams and a nice mid-rise waist that both looks and feels great. With the comfort and thermal temperature regulation in this product, you’ll love how warm you feel when you are on the go on the trails. Plus, you won’t have to worry about getting overheated, since you’ll get great ventilation.

Features
These bottoms are very durable, and they are designed to resist odor and bacterial build up. You’ll get a nice pair of bottoms you can wash in your washing machine and use in your dryer for easy maintenance. Also, these won’t chafe because they feature flatlock seams, and come with a nice, overall design that makes them built to last. You’ll be warm, dry and comfortable on the trails.

Durability
Smartwool's NTS Mid 250 Bottom brings you a durable choice in bottoms for thermal temperature regulation, and high-quality materials packed in the design. The Merino wool fabric in these bottoms is built to be long-lasting and will give you a lot of temperature regulation for a long time during those cold winter months. You’ll get a lot of comforts and a nice thermal temperature boost, as well as a product that is built to wick moisture and keep odor out. With so much durability, you’ll have this option for a long time.

Value
Smartwool Men's NTS Mid 250 Bottom comes at an affordable price considering the high-quality Merino wool you’ll find in this product. Since the Merino wool is moisture wicking and breathable, you’ll get plenty of ventilation to prevent overheating. Also, you’ll get a lot of built-in comfort from the soft material which will keep you warm on very cold days. With all of that features in these bottoms, you’ll be able to use them and get a nice value purchase.

7. People Socks - Crew Wool Socks

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.8
PEOPLE SOCKS Men's Women's Merino wool crew socks
PEOPLE SOCKS Men's Women's Merino wool crew socks
Amazon Link
Materials
87
Features
85
Durability
90
Value
89
best offer for today
Amazon Link
$35.00
Pros:

Can be machine washed

Durable

Comfortable

Cons:

Could be a bit thicker sock

These crew Merino wool socks offer you the most protection for your feet when going on your next adventure. When hiking or camping, it is always a great idea to layer your socks so your only pair does not get damp or wet, which can lead to serious problems when in the woods. These socks are definitely a must when going on your next hiking or camping trip.

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Materials
Crew wool socks are manufactured out of Merino wool and made to be comfortable in all seasons. These socks are designed to be worn every day without breaking down and to provide extra support to the heel and toes. These socks are the perfect thickness as they maintain heat, to keep your feet warm which is highly important on adventures during the winter.

Features
This product is made to be machine washable. You’ll also get a satisfaction guarantee if you purchase these socks, and anything happens to them within a year, the company will send you replacements no questions asked. That is a great feature, especially for socks as they usually take a beating. These socks will keep you comfortable and warm without making you feel overheated.

Durability
It's hard to go wrong with Merino wool. Reviewers agree that this pair of socks is no exception to the rule. One reviewer claims to have used these socks for 28 days straight and they are still in good condition.

Value
Crew wool socks are priced higher than a normal pair of socks, but that is because you get four pairs and they come with the 1-year guarantee that they will not break down and will provide you with the comfort and durability you expect when purchasing a pair of hiking socks.

8. MERIWOOL Women’s Shirt 

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.5
MERIWOOL Womens Base Layer 100% Merino Wool Midweight Long Sleeve Thermal Shirt
MERIWOOL Womens Base Layer 100% Merino Wool Midweight Long Sleeve Thermal Shirt
Amazon Link
Materials
91
Features
87
Durability
88
Value
84
best offer for today
more shops
Pros:

Made from 100% merino wool

Built with moisture-wicking properties

Exceptionally durable

Stretchy and breathable

Odor resistant

Affordable 

Cons:

Only available in black

Sizing is not accurate 

The MERIWOOL women’s base layer is soft, comfy, and breathable so will keep you warm and dry in the coldest of weather conditions. It is also exceptionally durable, long-lasting, and is super stretchy, making it a great piece to wear whilst exercising outdoors.

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Materials
The MERIWOOL base layer is made from 100% natural superfine17.5 Merino wool. This material is stretchy and breathable, making it great for wearing whilst taking part in outdoor sport. Merino wool is soft to touch and will not irritate your skin. The material makes a great form-fitting thermal base layer, beneath both mid and outer layers, as it keeps you warm and dry. Unlike other materials, merino wool works by adapting to your body’s temperature, so you are never too hot or cold.

Features
The base layer has been cleverly constructed, ensuring you stay dry, warm, and comfortable. It has a wide crew-neck collar that works by sealing in warmth and preventing cold from coming through. The raglan sleeves offer an increased level of mobility with no restrictions. The shirt is lightweight, stretchy, and recovers its shape incredibly well, making it exceptionally durable when taking part in intense outdoor exercise. 

Durability
Made from 100% Merino wool this women’s base layer is hardwearing, long-lasting, and exceptionally durable. The Merino wool gives the piece a natural wicking ability that keeps you dry and warm. The layer is exceptionally durable and has an odor-resistant property that keeps you smelling fresh. For best results hand washing and lying flat, to dry is recommended. The product also comes with a 1-year limited manufacturer’s warranty. 

Value 
Sold for an affordable price, this long-sleeved top is a great buy. Available in a range of sizes you will be silly not to buy one of these. 

9. ColdPruf Platinum Dual Layer Bottom

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.3
ColdPruf Men's Platinum Dual Layer Bottom
ColdPruf Men's Platinum Dual Layer Bottom
Amazon Link
Materials
88
Features
86
Durability
86
Value
89
best offer for today
Amazon Link
$25.18
Pros:

Affordable

Durable

Warm

Nice material

Cons:

Only three color options

This pick gives you an affordable option in high-quality Merino wool base layers that you can purchase even if you are shopping on a budget. You’ll get a shirt with a nice design that can insulate and boost your warmth on those cold winter days. Also, the shirt is designed to ventilate well and features moisture-wicking properties so that you’ll never overheat. You get plenty of comforts, too, with this shirt, since it is soft to the touch and feels great to wear.

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Materials
The bottom is comprised out of 100% CVPT performance polyester on the inside, and the outside is made from 70% polyester and 30% Merino wool materials. The garment also features flat seams so it won’t rub or chafe you while you are active. It has Thermachoice System technology packed into it which can help keep you warm while you are active and the weather is cold. You’ll get plenty of comfort and warmth when you wear this shirt in the cold.

Features
These pants come with a nice ability to insulate well, boosting your warmth and keeping you comfortable while you are active. The Merino wool still breathes and ventilates well, and you also get moisture-wicking protection so that you stay dry and won’t need to worry about overheating. Also, you’ll get a strong, well-designed option that fits very well and feels great whenever you wear it.

Durability
These feature an interesting combination of materials that help make this product strong. You’ll get Merino wool for the extra insulation and ventilation, with polyester for extra comfort. The bottom wicks away moisture well and can keep out both odor and bacteria with ease, which helps extend the lifespan.

Value
This pick is priced affordably, so even if you are shopping on a budget, you should be able to afford it. You’ll get a great bottom layer that can effectively boost your warmth and insulate well, but that still provides plenty of ventilation and moisture-wicking properties so that you don’t overheat.

10. Minus33 Franconia Bottom

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.8
Minus33 Franconia Bottom
Minus33 Franconia Bottom
Amazon Link
Materials
90
Features
87
Durability
88
Value
82
best offer for today
Amazon Link
$74.99
Pros:

Affordable

Durable

UPF protection

Warm

Cons:

Could offer more color and pattern options

Minus33’s Franconia bottom is a top-quality Merino wool bottom that provides plenty of comfort and warmth for all of your outdoor activities during the winter. You’ll get plenty of thermal temperature regulation and a very soft material blend that will feel great against your skin. Also, these bottoms are very durable and are made to last, offering some built-in sun protection and other weather protection features. You can also easily keep them clean by throwing them in the washing machine.

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Materials
They feel great when you wear them, and they also do a great job of boosting warmth and providing nice temperature regulation. You’ll get a quality product from a wonderful manufacturer that is known for creating top-quality options. You’ll also get a very durable overall construction with these bottoms.

Features
These are made so that they are easy to keep clean. You can throw them in your washing machine and dryer for easy maintenance. Also, you get a lot of thermal temperature regulation built into the design for extra warmth. The soft material means they feel great when you wear them, and they’ll also protect you from the weather since they have a 50+ UPF rating. So, you’ll get durability, warmth, and weather protection all packed into this great product.

Durability
Since this bottom is made to protect you from the sun and also offers some ventilation and moisture-wicking capabilities, it is very durable. You’ll be able to use these bottoms for a long time and they will withstand the test of time with ease. With all of their comfortable features, they make a nice choice.

Value
This option is priced affordably for a high-quality bottom that is made out of Merino wool. With the weather protection you get from the sun and other issues, these bottoms are quite durable and long-lasting. So, you be able to use them for a while before you’ll need to worry about replacing them, and that makes them a good investment.

11. Alvada Wool Hiking Socks

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84.5
Alvada 80% Merino Wool Hiking Socks Thermal Warm Crew Winter Boot Sock for Men & Women 3 Pairs 
Alvada 80% Merino Wool Hiking Socks Thermal Warm Crew Winter Boot Sock for Men & Women 3 Pairs 
Amazon Link
Materials
84
Features
85
Durability
85
Value
84
best offer for today
Amazon Link
$19.99
Pros:

Mesh ventilation channels improve airflow and breathability

Moisture control fibers keep your feet dry 

Superior cushioning positioned in the footbed 

Comes in a pack of 3 socks 

Washable

Cons:

Only available in charcoal

Sizing is not accurate 

Alvada 80% Merino wool socks are known for keeping your feet warm. Thick, warm, and fuzzy, these super-soft socks that have a fuzzy inner lining are designed perfectly for colder temperatures.

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Materials
These thermal socks are made from a mixture of premium fabrics including 80% Merino wool, 15% polyester, 4% nylon, and 1% spandex. The socks provide a good level of support making them great for hiking. 

Features
The socks are ideal for wearing in colder temperatures as they keep out the moisture and cold. The socks have been constructed with mesh ventilation channels that improve their breathability and airflow. They include moisture control fibers that keep your feet dry. They have also been constructed with arch compression that provides added stability and support. 

Durability
This pair of hiking socks are hardwearing and suitable to wear whilst walking along rugged terrains. The socks have additional cushioning in the footbed that provides extra protection. They also have a reinforced toe and heel for extreme durability. The hiking socks are suitable for machine wash at a cold temperature. 

Value
Available as a pack of 3, these thermal hiking socks are being sold for a fantastic price. If you want a comfortable, warm, breathable, and durable pack of socks suitable to wear for hiking these are a great buy. 

12. Helly-Hansen Men’s LIFA Shirt 

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84
Helly-Hansen Men’s LIFA Merino Midweight Crew Base Layer Shirt 
Helly-Hansen Men’s LIFA Merino Midweight Crew Base Layer Shirt 
Amazon Link
Materials
83
Features
85
Durability
84
Value
84
best offer for today
Amazon Link
Pros:

Stylish design

Available in a variety of colors

Has a 100% LIFA Stay Warm Technology interior and a 100% merino wool exterior 

Made from 225g LIFA merino fabric

Exceptionally durable 

Cons:

Expensive 

In 1970 the Helly-Hansen’s LIFA range launched their first technical base layers that revolutionized the industry. Since then, they have been known for making some of the best base layers worldwide.

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Materials
The 2-in-1 base layer has a 100% merino wool exterior and a 100% LIFA Stay Warm Technology interior. The shirt is made from 225g LIFA merino fabric and is non-itch, making it suitable for people with sensitive skin.
 
Features
The shirt features a synthetic LIFA Stay Warm Technology interior that works by pushing moisture away from your skin and moving it to the fabrics surface, keeping you dry. The 100% merino wool exterior also generates a lot of warmth, making this layer exceptionally warm to wear in the coldest of temperatures. 

Durability
The base layer is exceptionally durable and is suitable to wear for medium to high levels of outdoor activity. Some of the activities include sailing, climbing, trekking, ski touring, and mountaineering. The lightweight shirt is perfect for activities like this because it provides them with enough insulation and warmth when outside in harsher weather conditions. 

Value 
Available in 8 different colors, this is one of the most expensive options in our collection. Offering a stylish design, this is a great choice if you have a bigger budget, however, it may be a little pricey for some. 

13. MERIWOOL Half Zip Sweater for Women 

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
83
MERIWOOL Women’s Base Layer 100% Merino Wool Midweight 250g Half Zip Sweater for Women 
MERIWOOL Women’s Base Layer 100% Merino Wool Midweight 250g Half Zip Sweater for Women 
Amazon Link
Materials
83
Features
82
Durability
84
Value
83
best offer for today
Amazon Link
$59.99
Pros:

Features moisture-wicking properties

Odor resistant

Made from 100% all-natural superfine 18.5-micron merino wool 

Exceptionally durable

Cons:

Mid-price 

If you want a stylish and warm base layer, then look no further than the MERIWOOL women’s half zip zweater.

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Materials
This base layer is made from a 100% all-natural superfine 18.5-micron merino wool material. Ultra-soft, this material is itch-free and weighs 250g, making it midweight. 

Features
This base layer has a natural built-in wicking property that works by pulling the moisture away from your body and bringing it to the surface of the sweater. The wool is highly breathable and odor resistant. The sweater's neck collar allows you to seal in extra warmth and the half zip makes it easier to cool down. Raglan sleeves ensure free-flowing movement when exercising. 

Durability
Exceptionally durable, this high performing sweater comes with a 30-day proof of purchase hassle-free refund, replacement, and exchange. It also has a 1-year limited manufacturer warranty. For best results, the sweater should be machine washed in cold water and lay flat to dry. 

Value 
Available for a mid-price, this MERIWOOL women’s base layer, is a stylish piece that will keep you warm in cold weather conditions. 

14. LAPASA Long John Set

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
82.3
LAPASA Men’s 100% Merino Wool Thermal Underwear Long John Set Lightweight Base Layer Top and Bottom M31
LAPASA Men’s 100% Merino Wool Thermal Underwear Long John Set Lightweight Base Layer Top and Bottom M31
Amazon Link
Materials
82
Features
84
Durability
82
Value
81
best offer for today
Amazon Link
Pros:

Made from 100% merino wool

Breathable

Features a Rib-Knit technology that provides a 4-way stretch 

Cons:

Some reviewers found the base layer was too thin

The material is a little scratchy 

The LAPASA Merino wool long john set is a brilliant base layer to keep you warm whilst outside in cold weather.

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Materials
The long john set consists of 100% of 200gm, 18.5 microns Merino wool. The material is incredibly soft against your skin and provides an amazing layer of insulation that will keep you warm when in cold temperatures. 

Features
The long john set from LAPASA is lightweight, fitted, and breathable. Made from 100% Merino wool, this set will keep you incredibly warm whilst in cold temperatures. The long john set will also react to your body temperature so when you are feeling cold, it will help you stay warm and will keep you cool if you become too hot.

Durability
The base layer from LAPASA has been constructed using a Rib-Knit technology that gives the fabric a 4-way stretch. The neckline features a binding that helps improve the item's stretch as well as durability, reducing the risk of damage to the garment. 

Value 
If you have a larger budget to spend, this option is a fantastic buy. Warm, durable, breathable, and lightweight, it has plenty of features to offer if you have the extra money to spend. 

Criteria Used for Evaluation

Materials

We discussed the materials in all of the products on our list, since some of them are made out of 100% Merino wool, and others feature Merino wool and a blend of other materials.

The blend of materials can make for a warmer embrace or can make the item more comfortable. Materials become important to the overall quality and design of the product, so it is important to take a look at that.

Merino wool is one of the warmest and most comfortable materials that you can wear, and if you live in colder climates than this material is a must have in your clothing arsenal. It is made from sheep's wool and is not the typical itchy wool that first comes to mind when you think of wearing wool. This wool is comfy and feels great against your skin, if you have never worn Merino wool, give it a try and you won't be disappointed.

Features

We analyzed features for each product on our list by looking into what makes the item stand out from the rest.

We investigated features such as breathability, as well as overall protection and durability. Another feature that Merino mool is well known for is its wicking power and ventilation. Depending on the environment that you will be in, this can make or break an article of clothing. Make sure you take a look at your product’s features so you wind up getting the product that is right for you.

Some great features that come with all Merino wool clothing are that it is soft, feels cool on your skin as it reacts to your body temperature, it is odor resistant to ensure no matter what you are doing the wool will not retain any odor, and it is quite breathable. This is good as when you are participating in winter activities, your skin is able to breathe and you will not feel uncomfortable while you are wearing your Merino wool base layer.

All of these features make Merino wool the best for any base layer clothing, so when you are shopping for your next pair of base layers make sure they feature at least a percentage of Merino wool.

Durability

Durability is always important when you purchase something, and most clothes made with Merino wool in them offer a lot of durabilities.

It is inevitable that these clothes will be washed, and it is important to have confidence before you purchase something that will hold up in the washing machine. Sometimes with wool products, it is hard to avoid pilling, but some articles pill more than others. We discussed what we felt made each product on our list durable.

Wool is known for being a tough material and Merino wool is no exception. Merino wool is strong and resilient and that is why it the number one choice for winter athletes. It is the perfect material for the job of keeping you warm and also holding up over time so when you buy a pair of Merino wool base layers that they will last multiple seasons.

Value

When we analyzed the value, we considered the price of each product along with how long it would last.

We also took a look at the benefits and features the product offered and factored that in. Merino wool is known to last for a long time, so even if the price is slightly higher, we believe that the products on our list are well worth the investment.

When it comes to any clothing you always want to justify the price to the quality of the clothing and how long it is going to last you. When it comes to Merino wool which is a durable material, the cost is going to be a bit higher but will be worth it as it will most likely be the last pair of base layers you will need for some time.

It is best to check out the customer reviews if you see a pair of base layers you like to see how they held up for other consumers and if they were worth what they are valued at.

Expert Interviews & Opinions

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expert tips icon
Shrinkage

It is important to pay attention to the fine print. Has the article of clothing been pre-washed? Merino wool has been known to shrink in the washer.

Washing

One major benefit of Merino wool is the fact that it is antibacterial and stain resistant! This means that you will not need to wash these items after every use. This will help with the durability of the items as well.

Soften

Although Merino wool is known to be quite soft, if your items feel a bit itchy, you aren't out of luck. A trick to softening wool is to add 2 cups of vinegar into the cold water of your machine before you run it. Alternatively, if you are hand-washing the item, you can let the item soak in cold water and a few tablespoons of vinegar before washing.

Other Factors to Consider

Size

When you are searching around to purchase some excellent base layers so you stay warm in the winter, make sure you check out sizing and fit so that you wind up with something that fits you well. You don’t want a shirt or bottoms that are too large or small, or else they won’t feel comfortable and will be too frustrating to wear while you are active outside. Another important note about the size of a base layer is the fact that you're going to want it to sit close to your body. Having a baggy shirt under a tight one is not just uncomfortable to wear, it's also uncomfortable to look at. So, make sure you understand the manufacturer’s sizing correctly.

Frequently Asked Questions

q: If I am shopping on a budget for my base layer, will I get something that isn’t durable?

a:

No, not really. It does depend on which product you settle on and buy, but we provided plenty of affordable options on our list that are still very durable. Of course, you can't expect to pay the same amount of money for a pair of socks as you would for a great base shirt or pants.

q: I want to make sure the shirt I am buying won’t rub or chafe. What should I look for?

a:

Make sure the product you select has flatlock seams designed into it. Those seams help ensure that you won’t wind up with a base layer that rubs or irritates your skin. This is especially important in slim fit shirts or pants because the material is much closer to your body. Merino Wool itself tends to be very soft, so the seams are where you will really need to pay attention.

q: Is ventilation important when I’m trying to stay warm?

a:

Yes, it is. You can still wind up getting covered in sweat without ventilation, and when you get wet like that and it is cold outside, you can wind up freezing. So, getting something that breathes well is a great idea. Merino Wool has great absorption qualities, but life is unpredictable at times and there could be a time when the absorption qualities of the wool can't keep up with your activities and a breathable item will make you much more comfortable.

q: Is it better to buy something that is 100% Merino wool, or has a combination of materials?

a:

Really, this can be up to your personal preference. Sometimes a blend is better so that the product is more versatile. This way, you can reap the benefits of both materials in one product. However, if the wool is blended with synthetic fabric, your item may not last as long smelling good as a pure Merino wool product. There are reasons why some manufacturers combine materials and others don’t, but all of the products listed here are still very effective ones.

q: What are some of the best ways to tell that my product will be comfortable?

a:

Make sure you buy a shirt that offers plenty of ventilation and also won’t rub or chafe on your skin. So, check out its ability to wick moisture and make sure the seams in the shirt are flat. We have provided honest reviews and advice in this article, but you can also delve deeper and read more reviews for yourself and see what reviewers say about the comfort of the clothing.