Design: Shell and cuff: High Quality polypropylene, Asymmetrical streamline, Total ventilation Closure: Aluminium upper micrometric buckle, Instep micrometric buckle, Asymmetrical fast flowing lacing Footbed: Anatomical Frame: Extruded aluminium, 3 arch design Wheels: Roces 110mm 85A Bearings: ABEC 7 Spacers: Aluminium Rocker Washers: Aluminium Axles: Zero Clearance In-Shoe Comfort: Boot: ECOleather lining, Anatomical padding, Malleolus comfort area Cushioning: Integraded shock absorber device Durability & Traction: Stopper: Supplied with brake Additional Details: Order 2 down (ex: 7 men is equivalent to 9 women) 2 Year Limited Warranty