Northwave Extreme GT2 Morph Carbon 12 AAS sole with 100% carbon insert in the pedal area and stiffness index 12.0. The exclusive Anatomical Arch Support®, in TPU, allows the shoe to mold itself perfectly on the arch, making the sole ideal for any type of foot Compatible with NW Speedplay adapter for shorter foot-pedal distance Upper with patented Xframe2® construction, made with the latest generation materials only 0.5 mm thick, it transfers every watt of power by tightening the foot to the maximum and uniformly without any pressure point SLW2 rotor: the only one with step-by-step and complete release in a single button Integrated heel with internal directional fiber material prevents undesired Performance Regular insole for greater arch support