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.
Bambooskin Base Layer Set Men Blueberry
Bambooskin Base Layer Set
Blueberry Men
Sneaky Balaclava Base Layer Set Men Smokey Camo
Sneaky Balaclava Base Layer Set
Smokey Camo Men
Bambooskin Base Layer Set Men Molten Lava
Bambooskin Base Layer Set
Molten Lava Men
Bambooskin Base Layer Set Men Forest Night
Bambooskin Base Layer Set
Forest Night Men
Hiball Waffle Base Layer Set Men Black/Flame
Hiball Waffle Base Layer Set
Black/Flame Men
Sneaky Balaclava Base Layer Set Men Sage Green
Sneaky Balaclava Base Layer Set
Sage Green Men
Hiball Waffle Base Layer Set Men Dark Denim
Hiball Waffle Base Layer Set
Dark Denim Men
Sneaky Balaclava Base Layer Set Men Kalamata
Sneaky Balaclava Base Layer Set
Kalamata Men
Hiball Waffle Base Layer Set Men Olive Night
Hiball Waffle Base Layer Set
Olive Night Men
Outright Merino Pants Men Black
Outright Merino Pants
Black Men
Bambooskin Base Layer Set Men Black/Grey
Bambooskin Base Layer Set
Black/Grey Men
Outright Merino Pants Men Anthracite
Outright Merino Pants
Anthracite Men
Hiball Waffle Base Layer Set Men Anthracite/Radiant Yellow
Hiball Waffle Base Layer Set
Anthracite/Radiant Yellow Men
Sneaky Balaclava Base Layer Set Men Black/Flame
Sneaky Balaclava Base Layer Set
Black/Flame Men
Outright Merino Top Men Black
Outright Merino Top
Black Men
Outright Merino Top Men Anthracite
Outright Merino Top
Anthracite Men
Sneaky Balaclava Base Layer Set Men Moonlit Ocean
Sneaky Balaclava Base Layer Set
Moonlit Ocean Men
Bambooskin Base Layer Set Men Sniper Camo
Bambooskin Base Layer Set
Sniper Camo Men
Bambooskin Base Layer Set Men Autumn Aztec
Bambooskin Base Layer Set
Autumn Aztec Men
Fuse Merino Base Layer Set Men Stargazer
Fuse Merino Base Layer Set
Stargazer Men
Showing 20 of 22 products
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.