Specification: Roller skate skid: PP Boot: hard mit air vent system Insole material: Breathable membrane 3 mm foam Velvet EVA Inner length of boot: 180 - 210 mm Snap: two-section snap fastener Wheels: PVC 64 / 64 / 68 mm Color : white Size: S (26 - 30), M (31-35), L (36-40) 3 wheels for size S 4 wheels for size M, L Remarks: Not for the commercial use Complies with standard PN-EN 13843 :2009 24 months warranty