Shimano RC903 S-PHYRE High Performance Cycling Shoes created specifically for road racing, designed to to take you to the finish line at unmatched speed power and efficiency. The shoe's upper is wrapped in 360° reinforced microfiber leather with perforated ventilation providing excellent breathability and secured with two BOA Li2 dials for quick adjustment minimal pressure at the points and a tight fit to the leg. DYNALAST technology reduces fatigue on long trips , holding the leg securely in place and anti-twist heel cup enhances heel stability when you apply maximum power to the pedals during a breakaway or sprint across a field.