Design: Shell: High Quality polypropylene, Total ventilation, Replaceable slider Closure: Two micrometric buckles, Laces Shock Absorber: Integraded shock absorber device Frame: Extruded aluminium, 2 arch design Wheels: Roces 110mm 85A Bearings: ABEC 11 Spacers: Aluminium In-Shoe Comfort: Boot: EES Easy Entry System, Anatomical padding, Mesh Anatomical Durability & Traction: Axles: Zero Clearance Additional Details: Women size: Order 2 down (ex: 7 men is equivalent to 9 women) 2 Year Limited Warranty