Key Features:Hyperlight XC sole made of 100% unidirectional carbon with a stiffness index of 14.0 for top power transfer,28% more abrasion resistant than TPU, the Michelin rubber inserts with dual-layer compound technology provide excellent grip with minimum weight,Made with the patented XFrame 2 ® construction, the upper transfers every watt of power while providing the snuggest, even fit with no pressure points.,The double SLW2 dial differentiates the pressure between the top of the instep and the toe for even better adaptability,Highly abrasion-resistant ultrathin reinforcements ensure 360° protection along the entire upper,Integrated heel system containing directional fibre prevents any slipping,Pro Regular Fit footbed with a stiffened dual density design increases the power transfer.