Material: plastic, aluminum alloy, mutispandex, leather, PU, EVA bearings, screws Wheel: PVC Foundation: PE Packing: color bo Inline Roller Skates GX-8702Upper Material:plastic +meshLining Material:MeshInsole Material:PPOutsole Material:PPSize: 31-34 35-38 39-42Wheel: High rebound PU castingBearing: Abec-5 or Abec-7Chassis: AluminiumColour: Black/Red,Blue/White,Pink,yellow/blackAdjustable system ...