Mid Weight Two-Layer Thermal Crew
Originals Thermal Bottoms
Mid Weight Two-Layer Everyday Thermal Top
Two-Layer Everyday Thermal Top
Varitherm Base-Weight Ankle Length Bottom
Expedition Weight Ankle Length Bottom
Duofold Thermal Underwear
Duofold has a full line of thermal underwear for anyone who likes to get outside, no matter what the weather. Duofold thermal underwear products have evolved to deliver superior insulation, moisture management and comfort to all outdoor enthusiasts. Duofold is the leader in base layer apparel that keeps you warm and comfortable in the toughest conditions..