53%PL47%PBT/PL Endurance+ is an exclusive Speedo fabric, which resists chlorine, snagging, and facing longer than any other swim fabric. Featuring 4 way stretch technology for added softness and comfort. Longer lasting 20 times more fade resistance then conventional elastane swimwear. 100% Chlorine resistant. Quick drying lower level of moisture absorption, drying faster after swimming.