Tempered Glass. Very easy to apply.Oleo phobic coating reduces finger prints and smears. Protect your smart phone screen from scratches and finger prints with this highly durable screen protector. Unlike flimsy plastic films, these protectors are made from thin but extremely hard tempered glass and have an oleo phobic coating to reduce fingers prints and smears and will not affect the screen sensitivity. As these protectors are rigid glass they are self-smoothing when applied - no more hassle of trying to eliminate air bubbles!