Designed for road cyclists with a narrower instep, the SIDI Wire 2S Road Shoe is the perfect solution for athletes who want both maximum foot stability and the ability to transfer extreme power to their pedals. The ventilated carbon sole with the innovative Firmor lateral support system provides top-tier response and energy transfer without losing any lateral foot stability. At the same time, the specially designed dual-rotor closure gives us precise adjustment for the perfect tension balance between the shoe's internal and external sides and ensures a fit that adapts to every instep. We appreciate that the heel retention device tightens the top of the heel cup so that the heel is secured during steep climbs and sprints and that each side of the heel can be adjusted independently for our exact fit.