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Men's Thermal Underwear Tops

Shop men's thermal underwear tops in lightweight to heavyweight warmth, crew and henley styles, merino and waffle knits, and base layers for work, ski, or sleep.

Men’s Thermal Underwear Tops

Status60+ stores, 100+ brands, 200+ products

Here are a range of men’s thermal underwear tops (waffle knits, merino base layers, synthetic performance tops, and budget picks).

Best use?

Everyday warmth
Ski/snow sports
Running/training
Workwear/Outdoor labor

Material preference?

Merino wool
Synthetic performance
Cotton/waffle knit
Fleece-lined

Warmth level?

Lightweight
Midweight
Heavyweight
SuggestionsSuggestions
Show me midweight merino options
I need the warmest heavyweight base layer
I want budget thermals under $35
I’ll be using it for skiing—what should I pick?
Show me synthetic performance base layers for workouts
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