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Shop men’s thermal underwear bottoms in lightweight and heavyweights, merino and synthetic knits, base-layer leggings and long johns for cold-weather layering.
Shop men’s thermal underwear bottoms in lightweight and heavyweights, merino and synthetic knits, base-layer leggings and long johns for cold-weather layering.
Men’s Thermal Underwear Bottoms
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40+ stores, 60+ brands, 100+ products
The North Face
4.5 (10)TNF X Smartwool Men’s Merino Blend 150 Bottoms
$90
Icebreaker
Men's Merino 200 Oasis Thermal Leggings wFly
$105
Mack Weldon
WARMKNIT Long Underwear
$54.99
Decathlon
Forclaz Men's MT500 Merino Wool Base Layer Tights
$79.99
Fjällräven
Bergtagen Merino 190 LJ M
$145
Smartwool
Men's Classic Thermal Merino Base Layer Bottom Boxed
$125
Quince
4.9 (121)100% Merino Wool Cold Weather Base Layer Bottoms
$56
Carhartt
4.0 (1)Men's Base Layer Thermal Pants - Carhartt Force® - Heavyweight - Synthetic Wool-Blend Fleece
$71.99
Here are men’s thermal underwear bottoms across lightweight + heavyweight, including merino wool and synthetic base-layer leggings/long johns for cold-weather layering.
Weight/warmth?
Lightweight
Midweight
Heavyweight
Expedition / Very Warm
Material?
Merino Wool
Merino Blend
Synthetic (Poly/Nylon)
Silk
Best for?
High-output (skiing/running)
Everyday warmth
Extreme cold / standing around
Sensitive skin (no itch)
SuggestionsShow me heavyweight merino bottoms
I want synthetic, moisture-wicking base layer tights
I need something for extreme cold (standing around)
What’s the best value option here?
Browse more men’s thermal bottoms
