The fast and efficient shoe with tested strength and grip for the most demanding rides. Intuitive adjustments and a clean design make the Sidi Fast 2 an easy to use high performance shoe. The Single Tecno-3 system creates a perfect tension balance between the shoe's internal and external side, guarantees an excellent closure adapting to every instep The newly designed integrated heel cup is light weight and reinforced to avoid deformations after prolonged strenuous use The Aerolite sole is designed to maximize aerodynamics and power transmission The nylon and carbon fiber construction of the Aerolite Sole provides the ideal balance of stiffness for efficient power transfer, and flexibility for comfort The Fast 2 includes user replaceable polyurethane heel pad for improved stability and traction off the bike Specifications Shoe Size (EU)40.5