Acase(TM) AcaseView APLUS S Advance 100% Bubble Free Guaranteed Anti-Glare (Matte) Screen Protector Film Mask for iPhone 4 / iPhone 4S AT&T, Verizon, Sprint Version (Black) Double AG coating, anti-reflection and anti-glare EZ-INSTALL, 100% no bubble 0.188mm thickness, super slim High quality Japan PET film and glue, no residue after removal Hardness up to 3.2H, anti-scratch & smooth