Specification: Roller skate skid: aluminum Bearings: ABEC7 Boot: semi-soft with air vent system Material: Velvet Mesh EVA Synthetic leather High density foam Breathable membrane Wheels: PU80 mm/82A (L 39-42) Snap: two-section snap fastener Velcro strap Lacing Inner length of boot: 230 - 255 mm Brake: PP, impact resistance Remarks: Not for the commercial use Complies with standard PN-EN 13843:2009 24 months warranty