On cold winter days, extra layers are a must. But if you plan to hike, ski, climb or hit the gym, having a thin layer that keeps you warm without hindering your movement is crucial to performance. That’s where a base layer comes in. Typically worn next to the skin, it helps regulate core body temperature and prevent moisture buildup. You’ll want to stay away from cotton styles and instead opt for ones made of polyester, which are naturally much more breathable, sweat-wicking and durable. Below, we’ve rounded up our favorite base layer sets for men on the market.
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1. Herobiker Thermal Underwear Set
This set is made of soft polyester and contains a touch of spandex for added elasticity.
Pros: These come in five colors and four sizes. Flat seams and four-way stretch compression ensure ultimate comfort.
Cons: Some may find they sit a little loose.
2. FitExtreme Maxheat Performance Long Johns
These long johns are designed with mostly polyester but also contain a hint of polyurethane for increased durability and waterproof protection.
Pros: They also feature a silky soft fleece lining, ventilation for optimal airflow and four-way stretch compression. The pieces can be purchased as a set or separately.
Cons: These may also run slightly small.
3. TSLA Long Johns Set
This set features a blend of ultrasoft microfiber and lightweight spandex with four-way stretch construction to promote comfortable, unrestricted movement.
Pros: They're lined with microfleece for enhanced warmth and thermal insulation. These come in a variety of colors and seven sizes to choose from.
Cons: Some may find this set a tad snug.
4. Thermajohn Thermal Underwear Set
This polyester-spandex blend set is super breathable and lightweight, flexible and has a convenient hole in the crotch for when nature calls.
Pros: These are offered in eight sizes and five colors.
Cons: They may run somewhat small as well.
5. Rocky Thermal Underwear
Unlike the others, these long johns are offered in a lightweight, midweight and heavyweight option. Note: The lightweight pick contains 55% cotton.
Pros: They're available in an array of colors, stripes and a holiday print. These come in a whopping ten sizes and also have an open fly design.
Cons: They may run on the smaller side.
6. Meetyoo Thermal Underwear Set
This fleece-lined top and bottom are also rendered from polyester and a small percentage of spandex for improved elasticity.
Pros: This set is offered in four colors and five sizes. Flatlock seams prevent chafing and irritation. A four-way stretch fabric allows for full range of motion.
Cons: Some may find they run a bit small.
7. ViCherub Thermal Underwear Set
Like most of the others, this set contains a soft, stretchy polyester spandex blend and is lined with moisture-wicking microfleece.
Pros: These also feature an open-fly and four-way stretch construction. They come in five colors and sizes.
Cons: They may be a little tight.
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