All Thermal Underwear

Heat Holders® All Thermal Underwear keeps you comfortably warm without bulk. They're designed for every day use for work, travel, and winter sports. Choose warmth levels ULTRA LITE™, LITE™, or ORIGINAL™, plus ceramic-infused options for lightweight heat. Soft, dual-brushed stretch fabric with flat seams are perfect for layering under clothes; most styles manage moisture and resist odor, and everything is machine washable. Tops and bottoms come in sizes S–XXL so you can mix and match your fit. Build your set, then finish with thermal socks, men’s hats, and women’s gloves.

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Original
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Heat Holders Women's Thermal Tights Black - Legs #color_black
Heat Holders Women's Thermal Tights Black - Packaging
194 Reviews
Women's Tights
$16.99
+3

Women's Tights

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Original
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Heat Holders Women's Footless Thermal Tights Black #color_black
Heat Holders Women's Footless Thermal Tights Black - Packaging
155 Reviews
Women's Footless Tights
$14.99 $22.99
+3

Women's Footless Tights

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Ultra Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Ghost
Model 1 #color_black
12 Reviews
Men's ULTRA LITE™ Base Layer Mock Neck Top
$34.99
Ultra Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Ghost
Model 1 #color_black
4 Reviews
Men's ULTRA LITE™ Base Layer Zip Top
$39.99

Men's ULTRA LITE™ Base Layer Zip Top

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Original
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Ghost
Model 1
7 Reviews
Men's ORIGINAL™ Base Layer Zip Top
$44.99

Men's ORIGINAL™ Base Layer Zip Top

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Men’s Ceramic Base Layer Pants
Men’s Ceramic Base Layer Pants
3 Reviews
Men’s Ceramic Base Layer Pants
$59.99

Men’s Ceramic Base Layer Pants

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Women’s Ceramic Base Layer Pants
Women’s Ceramic Base Layer Pants
2 Reviews
Women’s Ceramic Base Layer Pants
$59.99

Women’s Ceramic Base Layer Pants

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Men’s Ceramic Base Layer Top
Men’s Ceramic Base Layer Top
Men’s Ceramic Base Layer Top
$59.99

Men’s Ceramic Base Layer Top

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Women’s Ceramic Base Layer Top
Women’s Ceramic Base Layer Top
2 Reviews
Women’s Ceramic Base Layer Top
$59.99

Women’s Ceramic Base Layer Top

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Original
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Men's ORIGINAL™ Expedition Base Layer Crew Top
Men's ORIGINAL™ Expedition Base Layer Crew Top
Men's ORIGINAL™ Expedition Base Layer Crew Top
$29.99

Men's ORIGINAL™ Expedition Base Layer Crew Top

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Original
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Men's ORIGINAL™ Expedition Base Layer Pants
Men's ORIGINAL™ Expedition Base Layer Pants
Men's ORIGINAL™ Expedition Base Layer Pants
$29.99

Men's ORIGINAL™ Expedition Base Layer Pants

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Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Men's LITE™ Traverse Base Layer Crew Top
Men's LITE™ Traverse Base Layer Crew Top
Men's LITE™ Traverse Base Layer Crew Top
$27.99

Men's LITE™ Traverse Base Layer Crew Top

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Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Men's LITE™ Traverse Base Layer Pants
Men's LITE™ Traverse Base Layer Pants
Men's LITE™ Traverse Base Layer Pants
$27.99

Men's LITE™ Traverse Base Layer Pants

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Ultra Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Men's ULTRA LITE™ Ascent Base Layer Crew Top
Men's ULTRA LITE™ Ascent Base Layer Crew Top
Men's ULTRA LITE™ Ascent Base Layer Crew Top
$24.99

Men's ULTRA LITE™ Ascent Base Layer Crew Top

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Ultra Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Men's ULTRA LITE™ Ascent Base Layer Pants
Men's ULTRA LITE™ Ascent Base Layer Pants
Men's ULTRA LITE™ Ascent Base Layer Pants
$24.99

Men's ULTRA LITE™ Ascent Base Layer Pants

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Original
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Women's ORIGINAL™ Arctic Base Layer Crew Top
Women's ORIGINAL™ Arctic Base Layer Crew Top
Women's ORIGINAL™ Arctic Base Layer Crew Top
$29.99

Women's ORIGINAL™ Arctic Base Layer Crew Top

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Original
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Women's ORIGINAL™ Arctic Base Layer Pants
Women's ORIGINAL™ Arctic Base Layer Pants
Women's ORIGINAL™ Arctic Base Layer Pants
$29.99

Women's ORIGINAL™ Arctic Base Layer Pants

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Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Women's LITE™ Horizon Base Layer Crew Top
Women's LITE™ Horizon Base Layer Crew Top
Women's LITE™ Horizon Base Layer Crew Top
$27.99

Women's LITE™ Horizon Base Layer Crew Top

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Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Women's LITE™ Horizon Base Layer Pants
Women's LITE™ Horizon Base Layer Pants
Women's LITE™ Horizon Base Layer Pants
$27.99

Women's LITE™ Horizon Base Layer Pants

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Ultra Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Women's ULTRA LITE™ Drift Base Layer Crew Top
Women's ULTRA LITE™ Drift Base Layer Crew Top
Women's ULTRA LITE™ Drift Base Layer Crew Top
$24.99

Women's ULTRA LITE™ Drift Base Layer Crew Top

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Ultra Lite
ORIGINAL WARMEST
LITE WARMER
ULTRA LITE WARM
Women's ULTRA LITE™ Drift Base Layer Pants
Women's ULTRA LITE™ Drift Base Layer Pants
Women's ULTRA LITE™ Drift Base Layer Pants
$24.99

Women's ULTRA LITE™ Drift Base Layer Pants

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