Built to perform to the demands of the Pro Peloton designed and engineered for superb fit comfort and maximum pedaling efficiency. UPPER Heat moldable Custom-fit Technology. Innovative Surround upper pattern provides perfect balance of holding power and absolute all-day comfort. TEIJIN AVAIL100 ultra-fine fiber synthetic leather. Excellent shape-retention by unique balance of high rigidity and elasticity. Stretch resistant superior durability and lightweight. Adaptable mechanical closure system adjusts to various instep height and shapes. Expanded Custom-Fit sections for greater support and comfort. 3D breathable mesh for optimal ventilation. Custom Fit reinforced ergonomic heel cup ensures a comfortable performance-enhancing fit. INSOLE Custom-Fit insole heat moldable insole with adaptable arch wedge provides custom natural foot LAST Shimano Dynalast provides a precise fit and improves pedaling efficiency SOLE Ultra-rigid lightweight hollow channel weaved carbon fiber sole Also Available in wide type Best matched with PD-9000 489g size 40