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Men's Base Layers

Sleek bamboo, toasty wool, or versatile synthetic? When it comes to base layers, there’s a material for every occasion. Use our thin thermal underwear sets all year round and cozy up with our warmest base layers when the mercury drops. Regardless of the season, we have a base layer for you. All our men’s thermal underwear is snug-fitting, moisture-wicking, and fast-drying to keep you comfortable even during the most intense days in the great outdoors.

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Bambooskin Base Layer Set Blueberry Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
2023 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (2,023)

Bambooskin Base Layer Set Men Blueberry

Bambooskin Base Layer Set

Blueberry Men

$89
$89
6 colors
Sneaky Balaclava Base Layer Set Smokey Camo Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1824 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (1,824)

Sneaky Balaclava Base Layer Set Men Smokey Camo

Sneaky Balaclava Base Layer Set

Smokey Camo Men

$95
$95
5 colors
Bambooskin Base Layer Set Molten Lava Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
2023 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (2,023)

Bambooskin Base Layer Set Men Molten Lava

Bambooskin Base Layer Set

Molten Lava Men

$89
$89
6 colors
Bambooskin Base Layer Set Forest Night Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
2023 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (2,023)

Bambooskin Base Layer Set Men Forest Night

Bambooskin Base Layer Set

Forest Night Men

$89
$89
6 colors
Hiball Waffle Base Layer Set Black/Flame Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1007 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.8 (1,007)

Hiball Waffle Base Layer Set Men Black/Flame

Hiball Waffle Base Layer Set

Black/Flame Men

$99
$99
4 colors
Sneaky Balaclava Base Layer Set Sage Green Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1824 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (1,824)

Sneaky Balaclava Base Layer Set Men Sage Green

Sneaky Balaclava Base Layer Set

Sage Green Men

$95
$95
5 colors
Hiball Waffle Base Layer Set Dark Denim Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1007 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.8 (1,007)

Hiball Waffle Base Layer Set Men Dark Denim

Hiball Waffle Base Layer Set

Dark Denim Men

$99
$99
4 colors
Sneaky Balaclava Base Layer Set Kalamata Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1824 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (1,824)

Sneaky Balaclava Base Layer Set Men Kalamata

Sneaky Balaclava Base Layer Set

Kalamata Men

$95
$95
5 colors
Hiball Waffle Base Layer Set Olive Night Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1007 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.8 (1,007)

Hiball Waffle Base Layer Set Men Olive Night

Hiball Waffle Base Layer Set

Olive Night Men

$99
$99
4 colors
Outright Merino Pants Black Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
15 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.4 (15)

Outright Merino Pants Men Black

Outright Merino Pants

Black Men

$95
$95
2 colors
Bambooskin Base Layer Set Black/Grey Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
2023 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (2,023)

Bambooskin Base Layer Set Men Black/Grey

Bambooskin Base Layer Set

Black/Grey Men

$89
$89
6 colors
Outright Merino Pants Anthracite Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
15 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.4 (15)

Outright Merino Pants Men Anthracite

Outright Merino Pants

Anthracite Men

$95
$95
2 colors
Hiball Waffle Base Layer Set Anthracite/Radiant Yellow Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1007 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.8 (1,007)

Hiball Waffle Base Layer Set Men Anthracite/Radiant Yellow

Hiball Waffle Base Layer Set

Anthracite/Radiant Yellow Men

$99
$99
4 colors
Sneaky Balaclava Base Layer Set Black/Flame Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1824 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (1,824)

Sneaky Balaclava Base Layer Set Men Black/Flame

Sneaky Balaclava Base Layer Set

Black/Flame Men

$95
$95
5 colors
Outright Merino Top Black Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
14 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.9 (14)

Outright Merino Top Men Black

Outright Merino Top

Black Men

$105
$105
2 colors
Outright Merino Top Anthracite Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
14 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.9 (14)

Outright Merino Top Men Anthracite

Outright Merino Top

Anthracite Men

$105
$105
2 colors
Sneaky Balaclava Base Layer Set Moonlit Ocean Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
1824 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (1,824)

Sneaky Balaclava Base Layer Set Men Moonlit Ocean

Sneaky Balaclava Base Layer Set

Moonlit Ocean Men

$95
$95
5 colors
Bambooskin Base Layer Set Sniper Camo Men
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
2023 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (2,023)

Bambooskin Base Layer Set Men Sniper Camo

Bambooskin Base Layer Set

Sniper Camo Men

$89
$89
6 colors
Bambooskin Base Layer Set Autumn Aztec Men
Out of stock
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
2023 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.7 (2,023)

Bambooskin Base Layer Set Men Autumn Aztec

Bambooskin Base Layer Set

Autumn Aztec Men

$89
$89
6 colors
Fuse Merino Base Layer Set Stargazer Men
Out of stock
Slim Fit
Slim Fit
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
232 reviews
Star backgroundStar backgroundStar backgroundStar backgroundStar background
Filled starFilled starFilled starFilled starFilled star
4.6 (232)

Fuse Merino Base Layer Set Men Stargazer

Fuse Merino Base Layer Set

Stargazer Men

$135
$135
3 colors

Showing 20 of 22 products

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Men's Base Layers

Sleek bamboo, toasty wool, or versatile synthetic? When it comes to base layers, there’s a material for every occasion. Use our thin thermal underwear sets all year round and cozy up with our warmest base layers when the mercury drops. Regardless of the season, we have a base layer for you. All our men’s thermal underwear is snug-fitting, moisture-wicking, and fast-drying to keep you comfortable even during the most intense days in the great outdoors.

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