Champion Powersleek Sports Bra Womens Outer Cups, Frame Back and Straps: 63% Nylon, 235 Polyester, 14% Lycra Spandex; Inner Frame: 675 Nylon, 33% Spandex, Cup Lining: 60% Polyester, 40% Cotton; Back Lining: 82% Nylon, 18% Spandex bras closure Silky-smooth outer bra stretches for flexible fit. Fully constructed inner bra provides super-firm motion control. (The secret's the non-stretch molded cups, which shape and support without flattening.) Both outer and inner layers wick moisture for quick-dry comfort. Wide cushioned straps help relieve pressure on shoulders. Tag free, with gel-cushioned back close and front-adjustable straps. Nylon/polyester/spandex/cotton