... usable,durable 5.Fast delivery full body invisible shield screen protector for iphone4:1.screen protector for iphone42.top quality material 3.anti-scratch,anti- ... standard to test the hardness of the film;the screen protector for iPhone 4 Consist of five layers1)PET protective film, ... )Up to 98% lights penetrative ultra-transparent film,see clear,2)Silicone resin adhesive-no residue/no bubble from glue ...