Champion Duofold by Varitherm Performance 2-Layer Men's Thermal Pants Expedition-weight 9.4-oz. 2-layer 96% polyester/4% spandex with quick-drying moisture control and 360-degree stretch Importado Expedition-weight 9.4-oz. 2-layer 96% polyester/4% spandex with quick-drying moisture control and 360-degree stretch Sleek expedition-weight fabric traps warmth between two thermal layers. Plus, it wicks sweat from your skin, dries quickly for chafe-free comfort, even resists garment odors. 360-degree stretch allows maximum ease of movement. Tag-free elastic waist provides targeted moisture control. (Has adjustable inner drawcord.) Ankle length, with non-chafe flat-lock seams.