Professional triathlon racing shoe from Shimano for fast transitions and optimum power transfer. T1 quickstrap and extra-wide opening facilitate entry and enable lightning-fast changeover times - Asymmetrical heel strap is easy to grip so that the fit of the shoe can be quickly secured when changing. Breathable 3D mesh for optimum ventilation. Lightweight, fibreglass-reinforced nylon sole - Compatible with Spd-Sl and Spd cleat.