Stay warm in very cold weather. Wear this DuofoldŽ Shirt on its own or as base-layer thermal underwear. It's designed for exceptional warmth during low-level aerobic activities. Ideal for hiking, hunting, fishing, and moderate outdoor workouts.
6.3-oz. fabric has two smooth thermal layers.
Outer layer blends warm Merino wool with sleek polyester and nylon.
Inner layer keeps it simple: 100% pure cotton for softness next to your skin.
Together, both layers trap air to form a cozy thermal barrier.
Flat-lock seams won't chafe or dig.
Body-sized fit assures custom comfort.
Bound crewneck resists wear & tear.
Plus, it's tag-free, so it won't itch or scratch.
More Duofold products:
Be sure to browse our store for additional Duofold
Clothing that keeps you warm and comfortable in the toughest
conditions.