Men's Baselayers
Man wearing Heat Holders baselayer and thermal hat, using binoculars

Heat Holders® Men’s Thermal Baselayers make layering easy for workdays, weekend walks, and winter trips. Choose the warmth that fits your plan—ULTRA LITE™ for light layering, LITE™ for everyday cold, and ORIGINAL™ when the temperature really drops—plus ceramic-infused thermal pieces for lightweight, powerful heat. Soft, dual-brushed stretch thermal fabric with flat seams makes these base layers perfect for wearing under shirts, hoodies, and jackets. Many 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. Complete your cold-weather outfit with men’s thermal socks, men’s thermal hats, and men’s thermal gloves.

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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

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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

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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

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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

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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

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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

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Men's Original Expedition Base Layer Thermal Set in Charcoal
Men's Original Expedition Base Layer Thermal Set in Charcoal

Men's Original Expedition Base Layer Thermal Set in Charcoal

Choose Men's ORIGINAL™ Expedition Base Layer Crew Top (Size):

Choose Men's ORIGINAL™ Expedition Base Layer Crew Top (Size)

Choose Men's ORIGINAL™ Expedition Base Layer Pants (Size):

Choose Men's ORIGINAL™ Expedition Base Layer Pants (Size)

Men's Original Expedition Base Layer Thermal Set in Black
Men's Original Expedition Base Layer Thermal Set in Black

Men's Original Expedition Base Layer Thermal Set in Black

Choose Men's ORIGINAL™ Expedition Base Layer Crew Top (Size):

Choose Men's ORIGINAL™ Expedition Base Layer Crew Top (Size)

Choose Men's ORIGINAL™ Expedition Base Layer Pants (Size):

Choose Men's ORIGINAL™ Expedition Base Layer Pants (Size)

Men's LITE™ Traverse Base Layer Thermal Set in Black
Men's LITE™ Traverse Base Layer Thermal Set in Black

Men's LITE™ Traverse Base Layer Thermal Set in Black

Choose Men's LITE™ Traverse Base Layer Crew Top (Size):

Choose Men's LITE™ Traverse Base Layer Crew Top (Size)

Choose Men's LITE™ Traverse Base Layer Pants (Size):

Choose Men's LITE™ Traverse Base Layer Pants (Size)

Men's LITE™ Traverse Base Layer Thermal Set in Charcoal Heather
Men's LITE™ Traverse Base Layer Thermal Set in Charcoal Heather

Men's LITE™ Traverse Base Layer Thermal Set in Charcoal Heather

Choose Men's LITE™ Traverse Base Layer Crew Top (Size):

Choose Men's LITE™ Traverse Base Layer Crew Top (Size)

Choose Men's LITE™ Traverse Base Layer Pants (Size):

Choose Men's LITE™ Traverse Base Layer Pants (Size)

Men's Ultra Lite Ascent Base Layer Thermal Set in Black
Men's Ultra Lite Ascent Base Layer Thermal Set in Black

Men's Ultra Lite Ascent Base Layer Thermal Set in Black

Choose Men's ULTRA LITE™ Ascent Base Layer Crew Top (Size):

Choose Men's ULTRA LITE™ Ascent Base Layer Crew Top (Size)

Choose Men's ULTRA LITE™ Ascent Base Layer Pants (Size):

Choose Men's ULTRA LITE™ Ascent Base Layer Pants (Size)

Men's Ultra Lite Ascent Base Layer Thermal Set in Grey Heather
Men's Ultra Lite Ascent Base Layer Thermal Set in Grey Heather

Men's Ultra Lite Ascent Base Layer Thermal Set in Grey Heather

Choose Men's ULTRA LITE™ Ascent Base Layer Crew Top (Size):

Choose Men's ULTRA LITE™ Ascent Base Layer Crew Top (Size)

Choose Men's ULTRA LITE™ Ascent Base Layer Pants (Size):

Choose Men's ULTRA LITE™ Ascent Base Layer Pants (Size)