SPEEDO Endurance Women's Sprinter Switch Flyback One Piece Swimsuit Designed from Speedo's innovative Endurance fabric that stands up to bagging, sagging, and the harsh effects of chlorine. 100% chlorine resistance that lasts 20 times longer than the average swimsuit. Unique four-way stretch provides comfortable, body-hugging fit. Flyback provides excellent support and mobility. Fully lined.