This popular design has been refined with 70D KINETIC SPEED side panels to offer better aerodynamics than ever before. Engineered for long and short course racing, this Suit also comes with 2XU?s quick drying, body cooling ICE X fabric to lower body temperature by up to 5F. Through advanced turbulent airflow technology, 70D KINETIC SPEED panels promise greater speed on the bike and slight compression of the muscles for heightened endurance and power.