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Base Layers & Thermals

22 items
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Carhartt Men's Black Base Force® Midweight Classic Bottom
2 colors
Base Force® Midweight Classic Bottom
$29.99 — $39.99
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Carhartt Men's FIRED BRICK HEATHER Base Force® Heavyweight Quarter-Zip
4 colors
Base Force® Heavyweight Quarter-Zip
$49.99 — $61.99
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Carhartt Men's HEATHER GREY Base Force® 100% Cotton Midweight Crew
2 colors
Base Force® 100% Cotton Midweight Crew
$29.99 — $39.99
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Carhartt Men's BLACK HEATHER Base Force® 100% Cotton Midweight Bottom
2 colors
Base Force® 100% Cotton Midweight Bottom
$29.99 — $39.99
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Carhartt Men's BLACK HEATHER Base Force® Heavyweight Poly-Wool Bottom
3 colors
Base Force® Heavyweight Poly-Wool Bottom
$44.99 — $55.99
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Carhartt Men's Navy Base Force® Lightweight Crew
2 colors
Base Force® Lightweight Crew
$24.99 — $31.99
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Carhartt Men's Black Base Force® Lightweight Bottom
2 colors
Base Force® Lightweight Bottom
$24.99 — $31.99
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Carhartt Men's SHADOW HEATHER Base Force® Heavyweight Bottom
2 colors
Base Force® Heavyweight Bottom
$44.99 — $55.99
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Carhartt Men's Black Base Force® Midweight Classic Crew
4 colors
Base Force® Midweight Classic Crew
$29.99 — $39.99
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Carhartt Men's Red Classic Cotton-Poly Union Suit
2 colors
Classic Cotton-Poly Union Suit
$49.99 — $52.99

Carhartt Base Layer

Start those frigid winter days with a cup of coffee and Carhartt Base Force® thermals. When you don't get to choose your work environment, choose your gear. With Carhartt's base layers, you can rest assured that no matter how extreme the conditions, Carhartt Force Extremes® thermals will keep you warm. Our men's and women's thermals are the ideal choice for winter weather. If you're planning on a cold winter hunt, we've got camo thermals that are the perfect match for your Carhartt hunting gear. Our thermals feature FastDry® and odor-fighting technology so you can feel comfortable and confident all day long. Pair our base layer with your favorite flannel shirt and a pair of men's overalls for the ideal amount of coverage for a day on the jobsite. These thermals also feel great under our heavyweight sweatshirts. Base Force Extremes® gear isn't just for the coldest days of the year - we've also got men's fitted boxer briefs and lightweight undershirts that will keep you covered. The best workwear arsenal is built from the ground up. Build yours the right way with Carhartt thermals. When it comes to quality workwear you can count on, count on Carhartt to keep you covered.