Key Features: Carbon XC 12 Sole with full-carbon insert in the pedal area and a stiffness index of 12.0. TPU inserts in strategic points ensure high traction and outstanding wear resistance., The BioMap unibody construction upper has a more anatomical, wraparound design that minimizes energy loss to the pedals., TPU thermowelded reinforcements for added protection., Double SLW2 dial, the only dial with step-by-step and full release in a single button for optimal pressure distribution., Performance Regular footbed provides greater support..