10 Best Thermal Underwear 2018

10 Best Thermal Underwear 2018

If you are searching for some well-made underwear that will keep you warm and cozy once the cold weather strikes you are at the right place. High quality thermal underwear will allow you to spend more time outdoors even when the weather is freezing.

This guide will show you what the best thermal underwear is and what features are most important. In the end we will give a thorough analysis of the top 3 products in this category. Take a closer look as you don’t want to miss any crucial information!

Top 10 Thermal Underwear Overview Chart

PictureNameDescriptionPriceRating (1-5)
PictureNameDescriptionPriceRating (1-5)
1. Minus33 Merino Wool Men's Midweight Bottom, Denim HeatherBottom/ 100% Merino Wool$$$$4.7
2. Duofold Men's Mid Weight Double Layer Thermal Union Suit, Red, MediumSuit/ 100% Cotton Inside Layer, 65% Cotton/25% Merino Wool/10% Nylon Outer Layer$$$4.7
3. Cuddl Duds Women's Climatesmart Long Sleeve Crew Shirt, Black, 1XTop/ 100% Polyester$$4.6
4. Under Armour Women's UA ColdGear® Long SleeveTop/ 100% Polyester/ Anti-odor$$$4.6
5. Carhartt Men's Tall Base Force Super-Cold Weather BottomBottom/ Cotton$$$4.6
6. Carhartt Men's Midweight Cotton Union Suit,Red,0Suit/ Cotton$$$4.5
7. Duofold Men's Midweight Ankle Length Bottom With MoistureBottom/ 60% Cotton, 40% Polyester Texture$4.5
8. Duofold Women's Mid Weight Pant,Black,X-Large2 layer bottom/ 60% Cotton, 40% Polyester Texture$4.4
9. Duofold Men's Light Weight Veritherm Thermal PantBottom/ 96% Polyester/4% Spandex$4.4
10. Women's Thermal Underwear Set Top & Bottom Fleece LinedSuit$$4.0

What’s the Perfect Thermal Underwear?

Cold weather can be an issue for some outdoor activities in case you are not dressed well, dressed well in terms of warm clothes that will not only keep you warm, but dry also. Couple of criteria makes it difficult for the manufacturers to derive the perfect mix within a given budget. This is the main reason why thermal underwear made of natural fabrics are more expensive. But natural fabrics will take care of your body; they ventilate and provide better insulation.

In addition make sure that the size you choose is right. Too tight underwear will not provide you with the necessary insulation. Bulky underwear will interfere with your movement. It’s cold, you need warm clothes, but if you can’t move freely what’s the point in being outside?

Synthetic underwear is generally more affordable. Getting 2-3 pairs may be the ideal solution for you in case you’re spending much time outdoors and you are physically active. They tend to be more flexible for maintenance in terms of washing. Regarding durability it comes to an individual level and it mostly depends by the skill of the manufacturer.

We can now move on to a more in-depth analysis of the best thermal underwear the market has to offer.

3 Best Thermal Underwear Reviews

1. Minus33 Merino

This high end piece of thermal underwear is made out of premium merino wool. It is by far the best fabric there is for cold weather clothing. The Minus33 come in 7 sizes and several color designs just in case you want them to look stylish and suit your taste. The sizes will accommodate even the tallest people and those who are below the average height.

Underwear made from synthetic fabric can make you sweat too much or in the worst case not provide you with the much needed ventilation. This natural fabric doesn’t have that problem and it takes care for your body. It ventilates your skin and in the same time prevents the cold air from reaching your skin.

Being physically active and wearing warm clothes can lead to unpleasant odor. Well this is the case with synthetic materials, whereas the merino wool will stay odorless. It has this feature because of the breathability.

Overall the Minus33 is the finest piece of thermal underwear available on the market. If you have the opportunity to get a pair, go for it!

2. Duofold Thermal Union Suit

Duofold’s Mid Weight thermal union suit is the perfect choice for those who want to have their whole body protected from the cold. It may not be as flexible as with a set of separate bottom and top thermal underwear, however, wearing this suit will keep you warmer than a set will.

You can pick one of the 5 sizes available. Make sure you get a big enough sample as you need some room for the air to act as additional insulator. Also, having more room will make you feel more comfortable and will let your skin breathe easier.

Regarding maintenance you don’t have to worry much as all you have to do is put in a machine and push the start button.

The fabric used to make this product is a mix of cotton, merino wool with the outer layer being made of nylon for additional water protection. The natural fabrics give Duofold’s thermal union suit substantial advantage over its rivals.

3. Cuddl Duds Women’s

The Cuddl Duds Climatesmart Crew Shirt is made 100% of Polyester. Although being made from synthetic material, it still provides the body with enough ventilation to keep you dry and warm. It doesn’t require any special washing treatment. It’s completely machine washable and will not wear off after any subsequent washing.

It’s very durable and suitable even for some heavy duty physical activities outdoors during cold weather. It will allow you to move freely while keeping you warm. A product that keeps you warm without much bulk, that’s convenient.

It’s relatively cheap so getting few samples shouldn’t be a problem. This way you can wear one while the other one is drying.

You can get this underwear shirt in several different sizes and 3 designs: Black, Blush Pink and White. Certainly one will match your style!

To sum up, the Cuddl Duds Climatesmart Crew Shirt is the best top underwear available. It’s a worthy mention along the best thermal underwear, the Minus33!


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