Triathlon performance shoe designed to quicken transitions and optimise power transferT1-Quick strap and extra-wide collar simplifies foot entry and reduces transition time,Asymmetrical heel loop makes it easier to get your finger through the loop to quickly secure the shoe during transitions,3D breathable mesh for optimal ventilation,Womens specific fit for a more natural, comfortable fit,Light weight glass fiber reinforced nylon sole,SPD-SL and SPD cleat compatibility,Adaptable Cup Insole,Weight: 247g (size 40).