Morph Carbon 12 AAS sole with an all-carbon insert in the pedal area and a stiffness index of 12.0. The exclusive TPU Anatomical Arch Support allows the shoe to mould perfectly to the arch of the foot, making it ideal for all foot types. Speedplay adapter compatible for the lowest sole height between foot and pedal. SLW3 Dual Closure System, the only closure system with step-by-step and complete release in a single button that offers good pressure distribution. Integrated heel system ensures effective heel retention.