* 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 uppers 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