A tempered glass protector is a multi-layered screen protector. It has a bottom layer of absorbent silicon, PET film and an optically clear adhesive tempered glass and oleophobic coating in that order. Tempered glass is up to five times stronger than normal glass. Tempered glass is more heat resistant than regular glass, meaning your phone is less likely to be damaged by heat. Plastic screen protectors are much more likely to be scratched than tempered glass protectors, which are up to five times thicker than standard plastic protectors. The smoothness and clarity of the tempered glass makes the screen protector feel more like your actual smart phone screen than a plastic screen cover would.