The Champion Women's O2Cool Workout Pant features a mesh back panel for breathable comfort in the toughest workouts. Ergonomic flatlock seaming doesn't bind the skin. Invisible pocket for storage at left hip. Internal drawcord. Body: Loop back terry 61% nylon/27% polyester/12% spandex. Inserts: Bubble mesh 92% polyester/8% spandex. Crotch lining: 42% nylon/37% polyester/21% cotton. Imported.