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Shop men's thermal underwear sets in lightweight to heavyweight layers, crew and mock neck tops with matching bottoms, in merino wool or waffle knit for cold days.
Shop men's thermal underwear sets in lightweight to heavyweight layers, crew and mock neck tops with matching bottoms, in merino wool or waffle knit for cold days.
Men's Thermal Underwear Sets
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20+ stores, 40+ brands, 100+ products
Fjällräven
Bergtagen Merino 190 LJ M
$145
The North Face
4.5 (10)TNF X Smartwool Men’s Merino Blend 150 Bottoms
$90
Lands' End
4.3Men's Stretch Thermaskin Long Underwear Crew Base Layer
$13.19
Smartwool
Men's Classic Thermal Merino Base Layer One Piece
$250
RUDSAK
FRANC - 6524541 Iceland
$245
Macy's
3.7 (11)Men's Winter Thermal Top and Bottom, 4 Piece Set
$68
Icebreaker
Men's Merino 175 Everyday Leggings
$95
Muji
Warm Cotton Long Tights
$14.99
Here are men’s thermal underwear/base-layer options (tops + bottoms) spanning lightweight through heavyweight, including merino wool and waffle-knit styles, with crew and mock neck options.
Preferred warmth?
Lightweight
Midweight
Heavyweight
Material?
Merino Wool
Waffle Knit
Synthetic / Performance Blend
Top neckline?
Crew Neck
Mock Neck
SuggestionsShow me heavyweight merino sets for very cold days
I want waffle-knit sets (crew neck) with matching bottoms
Focus on lightweight merino sets for active use
Only show full sets (top + bottom), not separates
I’m not sure—what’s best for 20–40°F?
