Features:Carbon XC 12 sole with an 100%-carbon-fibre insert in the pedal zone and a stiffness index of 12.0.The TPU inserts strategically positioned on the sole ensure killer traction and abrasion resistance.A double SLW3 dial allows you to differentiate pressure across the toe area and top of the instep for an accurate comfortable fit.TPU anti-abrasion reinforcements on the upper provide the shoe with total protection.Regular Performance footbed for extra bow-arch supportThe mesh insert prevents overheating even in the hottest summer weather.Perforated upper for the utmost ventilation.