Features- NRG Air Carbon Reinforced sole with a stiffness index of 8.0 and 5 vents for perfect airflow- SPD pedal compatible (cleat plate not included)- The upper's seamless unibody construction reduces pressure points- 4 breathable mesh inserts and pores across the entire surface ensure optimal ventilation- SLW3 dial plus extra strap: the only dial with step-by-step and full release in a single button