NIKE Women's Yoga Pants 100% Polyester Imported Dri-FIT fabric to wick away sweat and help keep you dry and comfortable Wide stretch waistband for comfort and a flattering, supportive fit Flat seams for minimizing irritation due to chafing Lined inseam gusset for range of motion and enhanced comfort Fabric: Body: Dri-FIT 88% polyester/12% spandex; Gusset lining: Dri-FIT 100% polyester.