Key Features:Morph Carbon 12 AAS sole with full-carbon insert in the pedal area with a stiffness index of 12.0. The exclusive Anatomical Arch Support® made of TPU, allows the shoe to perfectly shape on the bow arch, making it the ideal sole for any type of foot,Speedplay adapter compatible for the lowest stack height between foot and pedal,The unibody construction matches strategically placed large mesh inserts with ultrathin reinforced materials to deliver unrivalled breathability and targeted stability,Uber-open-knit mesh ensures even greater airflow,The asymmetric lacing removes pressure from the top of the foot for the optimum snug fit,SLW3 dial plus extra strap: the only dial with step-by-step and full release in a single button,Performance Regular footbed provides greater support.