ROKA Men's Viper Pro Premium Hydrophobic Teflon Swimskin for Triathlon Swimming with Easy Removal Made of two premium, ultralight Italian stretch-woven textiles with additional compression in the quadriceps for support Hydrophobic Teflon coating that repels water and reduces drag and water absorption No Sew thermo bonded and taped construction to reduce drag, weight, and chafing compared to traditional sewing methods; folded and bonded neck, arm, and leg openings help reduce chafing, discomfort, and sausage leg Premium YKK Semi-Autolock coil zip design with low drag provides an easy removal exiting the swim  no lanyard needed Approved for USAT and WTC (IRONMAN) sanctioned events