- How can you stay warm outdoors, even 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 warm 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 thermal barrier.
- Tag-free banded crewneck and non-chafe flat-lock seams help ensure constant comfort.
- Body-sized system provides perfect fit, customized for tall men.
- 100% cotton inside; 65% polyester/25% Merino wool/10% nylon outside
Midweight 2-Layer Thermal fabrication featuring a 25% Merino Wool blend outer layer and a soft 100% Cotton inner layer for comfortable warmth in cold weather.