Cups, Band Interlining, Strap: 100% Polyester Frames: 90% Nylon, 10% Spandex#Band Lining: 50% Cotton, 50% Polyester#Back, Band Facing: 84% Natural Rubber Latex, 16% Nylon#Exclusive of trim and elastics Machine wash cold water with like colors#Only non-chlorine bleach when neede