Duofold Women's Varitherm - Pants polyester, spandex base-layer-underwear closure Smooth 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. Wide sweat-wicking waistband won't bind, dig, or chafe. (Has stretchy hidden elastic, adjustable inner drawcord, and tag-free printed label.) Sleek feminine fit follows and flatters your curves. Chill-blocking ankle length, with non-chafe flat-lock seams. Fiber Content: 96% Polyester / 4% Spandex Bi-Ply Fabric