Super Pro Back features wide straps for superior support and comfort. Engineered from our exclusive, longest lasting and best-selling Endurance+ fabric: 100% chlorine resistant fabric designed to lasts 20 times longer than conventional swimwear fabrics. Four-Way Stretch technology providing a body-hugging fit, great shape retention and soft comfort. Helps resist sagging and bagging, keeping swimwear fitting newer longer. Features lower back and higher leg cut for better freedom of motion in the water. Front liner. Fabric: 50% Polyester/50% PBT.