Speedo's exclusive Endurance+ is their longest lasting and best selling training suit fabric that is a 100% chlorine resistant fabric designed to lasts 20 times longer than conventional swimwear fabrics. Has Four-Way Stretch technology providing a body-hugging fit, great shape retention and soft comfort which helps resist sagging and bagging, keeping swimwear fitting newer longer. Recordbreaker is Speedo's best elite competitive back featuring a lower back and higher cut for ultimate freedom of motion. Fully lined. Fabric: 50% Polyester/50% PBT.