- 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.
- Flat-lock seams won’t chafe or dig. Tag-free neck won’t itch or scratch.
- Body-sized fit helps ensure custom comfort. Cozy ribbing trims elasticized cuffs, for added thermal protection.
- Details add extra value: bound V-neck, button-down placket, back flap, and two-needle stitching.
- 100% cotton inside; 65% polyester/25% Merino wool/10% nylon outside
Ultimate thermal underwear. Trust Duofold to create a union suit offering even more warmth in cold weather.