6x Savvies Ultra-Clear Screen Protector for BLU Advance 4.0, accurately fitting - simple assembly - residue-free removal crystal-clear display protection film, anti-static film material 100% bubble-free application, the protection film clings itself and without pressure to the display 100% fits, cut to fit the specific display perfectly can be removed at any time without any residues excellent writing quality for a gadget with a touchscreen