The world's first pedal manufacturer to develop a contact pedal mechanism, which was later implemented by Shimano in their pedals. Contact pedals require specific shoes. Such pedals are designed for sports and long distance riding. LOOK X-Track pedals are designed for the needs of mountain bikes, "gravel" and touring bikes. Tough, stiff and extremely reliable. Requires SPD or LOOK X-Track flat & scaron shoes. X-Track flats & scaron calves included;