Duofold Women's Varitherm - Ankle-Length Thermal-layer Pants polyester, spandex base-layer-underwear closure Soft mid-weight fabric stretches four ways for maximum ease of movement. Plus, it locks in your body's warmth, wicks moisture for chafe-free comfort, helps control garment odors, and even resists pilling. Tag-free elastic waist provides added moisture control. (Has adjustable inner drawcord.) Ankle length, with flat non-chafe seams. Fiber Content: 96% Polyester / 4% Spandex Jersey