Stay warm in very cold weather. Wear this Duofold shirt on its own or as base-layer thermal underwear. It's designed for exceptional warmth during low-level aerobic activities.
- 6.3-oz. fabric has two smooth thermal layers. Outer layer blends Merino wool with sleek polyester and nylon. Inner layer is pure cotton, for softness next to your skin. Together, both layers trap air to form a warm thermal barrier.
- Tag-free banded crewneck and non-chafe flat-lock seams help ensure constant comfort.
- Body-sized system provides a custom fit.
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