A Gravel Cycling Shoes With Powerstrap Velcro Closure System Design For An Enveloping Fit And A X4 Outsole Targeted Stiffness And Rubber Tread For Mixed Surfaces.Powerstrap X4 Is A Versatile And Ubiquitous Gravel-Focused Shoe, Designed For Drop-Bar Riders Whose Adventures And Aspirations Take Them Beyond The Traditional Paved Roads.Powerstrap:While Most Traditional Velcro Closures Just Pull Together Two Sides Of The Shoe´s Upper, In The Powerstrap Configuration A Ribbon Wraps Around The Foot, Providing Secure Containment Using Just Two Straps. The Instep And The Midfoot Are Separately Adjustable For Customized Fit And Compression.X4 Outsole:For These Versatile Shoes We Developed A Specific Outsole, The X4: A Carefully Considered Combination Of Stiffness And Comfort, To Turn Pedals Effectively On Mixed Surfaces, Blending Nylon - With Targeted Stiffness - And A Rubber Tread For Effective Grip And Durability.Features:- Powerstrap: Foot-Wrapping Velcro Closure Designed For An Enveloping Fit- X4 Outsole: Targeted Stiffness And Rubber Tread For Mixed SurfacesSpecifications:- X4 Nylon Outsole – With Rubber Tread, Stiffness Index 6- Weight: 292g (Size 42- 1/2 Pair)