Shell and Cuff : Glass Fiber Reinforced polypropylene. Closure : Memory Buck;e. Power Strap fast lacing systemBoot : EES easy system PAP progressive anatomical padding cool breath meshFootbed : Anatomical comfootbed Frame : Extruded aluminiumWheel : Roces 80mm 82A Bearing : ABEC 5Spacers : Aluminium Rocker Washers : AluminiumAxles : Hot Rod F Stopper : Supplied with Brake.