2XU Mens Swim Skin 80% POLYESTER, 20% POLYURETHANE Imported World-class hydro Tech tri skin provides the lowest water drag possible Quick-drying tri skin Lite fabric is Ultra lightweight and incredibly breathable Second-skin silicone gripper keeps your suit fitting securely Exclusive SBR fleece chamois offers essential padding and stays dry through every discipline of your triathlon Flatlock stitching adds comfort while the rear semi-lock zip with pull cord makes transitions easy Flat lock stitching Rear semi-lock zip Seamless gripper- no pad