SPEEDO PowerFLEX Shatter Skin Super Pro Back Adult New! Features wide straps for superior support and comfort. Swimsuits have to contend with some pretty harsh stuff: chlorine, perspiration, greasy oils found in sunblock, and stretching from constant use. Designed with those challenges in mind, PowerFLEX resists deterioration and maintains its shape 5-10 times longer than spandex. Gender: Female Silhouette: Super Pro Back Fabrication: 74% Nylon / 26% Xtra Life Lycra® Fiber