Speedo Womens Cosmic Explosion Endurance Axcel Back Swimsuit 50% polyester/50% pbt Endurance+ fabrication lasts 20 times longer to give you more value for your money Resists bagging, sagging, and the effects of suntan lotion, skin oils, and chlorine Comfortable skinny strap axcel back styling with contemporary cut Full front and back liner Made by speedo, the world's #1 swim brand