Genius 10 is everything you expect in a pro-level road shoe: Millennium 5 Carbon Composite Sole, Caliper Buckle two-way ratchet closure and many more. High quality carbon fiber reinforced nylon sole in carbon look. The addition of carbon results in excellent strength with optimum comfort in the entire foot area. It has a non-slip, replaceable polyurethane heel for comfortable walking. With alignment scale for optimal positioning of the pedal plates. SIDI's TECHNO-3 SYSTEM dials in fit along the entire length of the shoe, adapting the upper to the shape of the foot for a customized fit. SIDI's famously reliable and replaceable closures are improved by an all new proprietary SIDI Wire material that is completely non-binding for intuitive and effortless on-the-fly adjustments. Like most SIDI small parts, the TECNO-3 BUCKLE is serviceable and replaceable. Incorporates features of resistance, stability, lightness, transpirability, water-repellency and eco-friendliness. It is manufactured using the "Water-Tech" water treatment. Lower environmental impact, less noxious emissions into the air and into the work environment and the fact that not solvents, but water-based products were used, is beneficial to the environment as well as the final user.