2XU proudly presents the Men's Active Tri Suit which is engineered with 70D Kinetic Speed fabric for supreme aerodynamics, kinetic cool for thermo-regulation and 4-way stretch material. The singlet has flatlock seams to prevent chafing and silicone leg grippers to prevent jostling. The Singlet also has a 3/4 front semi-lock zip to make sure you stay firm and comfortable during your activities.