1)Material:PE shell+velvet+mesh
2)Chassis: Aluminum
3)Brake: PVC
4) Wheel: 64*22mm PU with light (S)
70*22mm PU with light (M&L)
5) Bearing: ABEC-7
6) Size: S ( 31 - 34 )
M ( 35 - 36 )
L ( 39 - 42 )