This shell is using the TPU and PC material, this kind of material is far more better than the others in current market which is using abs general protection engineering plastics shell, and the material this shell using is toughness with compressive seismic and wear-resisting ability, unintentional when it dropped or fall, can effectively protect your phone! The pattern is baked in the shell and, after ten thousand time sharp tip of friction test, it definitely will not rub off! This high-end product is using the old grind arenaceous treatment, the surface is very exquisite and also with the grind arenaceous touch!