Flyback styling features thin, streamlined straps with reinforced overlap binding. Thin, streamlined straps are reinforced with overlap binding for extra durability. Provides excellent support and freedom of motion. SpeedoŽ's exclusive Endurance+ is our longest lasting and best selling training suit fabric. Endurance+ is 100% chlorine resistant fabric designed to lasts 20 times longer than conventional swimwear fabrics. Four-Way Stretch technology also provides a body-hugging fit, great shape retention and soft comfort. Fabric: 50% Polyester/50% PBT.