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Heat Holders
Men's Thermal & Base Layer Underwear Size Guide

Men's Thermal Tops

Small Medium Large Extra Large XX Large
Chest (inches) Up to 37 38-40 41-43 44-46 47-49
Chest (cm) Up to 95 96-103 104-111 112-118 119-125


Men's Base Layer Tops

Small Medium Large Extra Large XX Large
Chest (inches) 34-36 38-40 42-44 46-48 50-52
Chest (cm) 86-91 97-102 107-112 117-122 127-132


Men's Thermal Bottoms

Small Medium Large Extra Large XX Large
Waist (inches) Up to 32 33-35 36-38 39-41 42-44
Waist (cm) Up to 81 82-90 91-98 99-105 106-112


Men's Base Layer Bottoms

Small Medium Large Extra Large XX Large
Waist (inches) 28-30 32-34 36-38 40-42 44-46
Waist (cm) 71-76 81-86 91-97 102-107 112-117

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