The Speedo Boy Revival Allover Jammer is ideal for swim training and regular use. Jammer styling offers more coverage to the legs and Speedo's exclusive Endurance+ is their longest lasting and best-selling training suit fabric. Endurance+ is 100% chlorine-resistant fabric designed to last 20 times longer than conventional swimwear fabrics. The suit has four-way stretch technology and provides a body-hugging fit, great shape retention, and soft comfort. The Endurance Suit has low moisture absorption and quick drying. The bathing suit has an inner drawcord at the waist for a secure and comfortable fit with a front gusset. The suits fabric is 50% Polyester/50%PBT.