New Premium Tempered Glass Screen Protector for Iphone 4, 4s ~ Tempered glass protector is made of chemical processed glass, which have excellent window display, high sensitivity and comfortable touche feeling ~ Oleophobic Coating: A,F(Anti-Fingerprint) coatedlayer for resistance against smudges and fingerprints. ~Advanced silicon adhesive to keep it in place. ~ Surface hardness: 9H