The Case-Mate Screen Protector for iPhone 4 and Verizon iPhone 4 is made of a tough polymer material that has a self-adhesive already built into it to stick to the face of your phone's screen. When removed there is no residue left behind and your iPhone is like brand new. With a simple three step process you peel away the backing, apply the protector, and smooth out the air bubbles. Your screen will remain scratch free for months! You receive three of these Case-Mate screen protectors in this 3-pack so that you are set for a long time.