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Men's Extreme Cold Thermal Underwear
Shop men's extreme cold thermal underwear in heavyweight base layers with brushed fleece, merino blends, and compression fits for skiing, work, and winter travel.
Men’s extreme-cold thermal underwear
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50+ stores, 80+ brands, 200+ products
Filson
400g Merino Wool Bottoms - Dark Olive
$199
Filson
400g Merino Wool Bottoms - Black
$199
Icebreaker
Men's 300 MerinoFine™ Polar Thermal Leggings
$200
Icebreaker
Men's 260 ZoneKnit™ Thermal Leggings
$175
Evo
evo Heavyweight Merino Wool Pants - Men's
$69.96
REI
4.1 (16)Capilene Thermal Weight Long-Underwear Bottoms - Men's
$99
Carhartt
4.5 (23)Men's Base Layer Thermal Shirt - Carhartt Force® - Heavyweight - Heathered Knit
$57.99
Aether Apparel
Polar Base Layer Pant
$135
Arc'teryx
Rho SV Bottom Men's
$120
Stussy
THERMAL BASE LAYER BOTTOM
$110
Evo
Oyuki Hitatech Pants - Men's
$59.46
Big 5 Sporting Goods
Coldpruf Men's 2-Layer Baselayer Pants
$19.99
Here are some men’s extreme-cold thermal underwear options—heavyweight base layers, including merino and thermal-weight styles.
Preferred material?
Merino Wool
Synthetic (Poly/Spandex)
Fleece-Lined
Waffle Knit
What do you need?
Top
Bottom
Set (Top + Bottom)
Primary use?
Ski/Snowboard
Outdoor Work
Hunting
Everyday Winter
Sleeping/Camping
SuggestionsShow me the warmest merino options
I want a top + bottom set for extreme cold
I need something for skiing—moisture-wicking and very warm
I want fleece-lined thermals
Can you explain what “thermal weight” vs “midweight” means?
