The Sidi Physis shoes are designed to offer complete freedom for superior performance. The Total Carbon sole with a stiffness rating of 11 out of 12 and grip rubber inserts is combined with the Ergofeel anatomical design to preserve the foot's natural functionality. Along with a premium welded upper, the shoes offer the perfect balance between comfort and lightness, ensuring fatigue arrives only at the end.The foot is solidly stabilised with Solid-Strap, a technology patented by Sidi to eliminate strap tension loss during performances. With all its features, Physis is ready to perform at its best on every route. With a lighter yet solid construction, it makes this shoe both fresh and robust.Protection without load on the toes, heel, and side, it has a seamless heel counter that stabilises the foot for a secure and comfortable stride. It features high visibility inserts and an anatomical Unum Ergo tongue.