The tempered glass protector has four layers, that is,nanostructured coating, tempered glass, explosion-proof film andsilicone coating. But the four layers have been tempered inchemically processing. Sharp tools like fingernail, key or evenknife cannot pose threat to the screen. It is 0.3mm and ultra-thinto guarantee the high sensitivity of the touch screen. The superboleophobic coating can greatly keep the dust, oil contamination andfinger mark far away from your phone. On the other hand, thecontamination can be easily got rid of. The water proof functionalso adds the glamour to the protector. Smooth edge design comes toensure the safety of your hand.