Playtex Women's Secrets Wire Free Seamless Shaping Bra 100% Polyester bras closure Center lining: 100% Nylon. Cup pad lining: 100% Polyester Cup pad: 100% Polyurethane. Cup, back, center: 77% Nylon, 23% Spandex. Compressed bottom cups provide for excellent uplift Wire-free comfort in a full-support design Stretch micro-thin foam lining for beautiful, natural shaping Stretch sides and back for move-with-you comfort