Kirkland Signature Active Yoga 3/4 Legging for Women 89% nylon, 11% spandex. 89% Nylon / 11% Spandex. Fabric wicks moisture away from skin to keep you dry. Reflective YKK zipper pocket at back of waistband; perfect for securing keys, cards, or money. Internal drawcord at waist to adjust your fit. Hidden key pocket inside front waistband