10 bestWarmest Base Layer For Cold Weatherof January 2026
112M consumers helped this year.
1

Merino Wool Base Layer - Mens 100% Merino Wool Long Sleeve Thermal Shirts Lightweight, Midweight, Heavyweight + Merino Socks (Large, Black 250)
Merino.tech

10.0
30% off
2

Fruit of the Loom Men's Recycled Premium Waffle Thermal Underwear Long Johns Bottom (1, 2, 3, and 4 Packs), Black, Medium
Fruit of the Loom

10.0
25% off
3

romision Thermal Underwear for Men Long Johns Fleece Lined Hunting Gear Bottom Top Set Base Layer for Cold Weather XS-4XL, Black, Large
romision

9.7
15% off
4

Runhit Mens Ski Thermal Underwear Set Long Johns Base Layer Fleece Lined Winter Undershirts Underpants for Cold Weather Gray Green-Black 2XLarge
Runhit

9.5
5

Under Armour Men UA CG Armour Fitted Mock, Warm Base Layer Top for Men, Compression Shirt for Running, Skiing, Winter Cold Weather Fitness Top
Under Armour

9.2
Other
6

Under Armour Men's ColdGear Base 4.0 Leggings
Under Armour

8.9
7

Woolove Men’s 100% Merino Wool Base Layer Long Underwear Thermal Leggings 260 GSM - Quick-Drying, Heavy-Weight, Cold Weather (Black, Medium)
Woolove

8.6
8

Stanfield's Men's Two Layer Merino Wool Baselayer Long John, Charcoal Mix, Large
Stanfield's

8.3
13% off
9

Roadbox Men's Thermal Underwear Long Johns Set - Winter Base Layer Warm Top and Bottom with Fleece Lined for Skiing Sports Cold Weather
Roadbox

8.0
10

Icebreaker Merino Women's 175 Everyday Cold Weather Base Layer Thermal Long Sleeve Half Zip Top, Black, Medium
Icebreaker Merino

7.7
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