Physis is designed to deliver all the freedom to top performance. The total carbon stiffness 11 sole with gripping rubber inserts meets Ergofeel anatomic design to preserve the foot's natural functionality. Matched by a premium welded upper, the shoes deliver the greatest balance of comfort and lightness so that fatigue comes at last. The foot is solidly stabilized with Solid-Strap, a technology that Sidi patented to eliminate straps' tension loss during performances. With all its features, Phisys is ready to perform. Lightweight yet solid construction Adapts to the foot for greater comfort and includes infinite individual adjustments that maintain tension Designed for power transfer with stiffness index 11, offering control, grip, and comfort during jumps Specifications Cleat Bolt Pattern2-BoltClosureDialShoe Size (EU)40Gender/AgeMen'sColorBlackDefined ColorBlackActivityCycling