Champion Women's Ultimate Running Legging Body: 88% Polyester/12% Spandex; Gusset: 90% Polyester/10% Spandex athletic-underwear closure Machine Wash Inside Drawcord For Adjustability Inside of Fabric is Brushed for Soft Feel and Warmth Chafe Resistant Ergonomic Flat Seams Invisible Zipper Key Pocket At Left Hip Lock Down Zippers And Grip Tape At Back Bottom Legs