Made for cyclists with a more narrow instep, the SIDI Wire 2S Road Shoe is the ideal answer for those who want both maximum foot stability and extreme power transfer. The ventilated carbon sole with the innovative Firmor lateral support system provides top-tier response and energy transfer without losing any lateral foot stability. The specially designed dual-rotor closure gives us precise adjustment for the perfect tension balance between the shoe's internal and external sides and guarantees a fit that adapts to every instep. Plus, we love 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 a perfect fit.