Anti Glare Screen Protector Universal 15.6'' Inch Laptop/Notebook [345x194mm] German Import The upper surface is matte , anti-reflective and eases the work in outdoor areas under strong lighting. The surface is made of extremely scratch-resistant polyethyleneterephthalate ( PET). The so-called hard coat process reaches the scratch resistance 4H , better than the usual Layer 3H anti-scratch protectors. With a light transmission of more than 95 percent, color stability and image quality of the film are not significantly affected. Thanks to the lower surface made from silicon the application of the protector is very easy . When you draw off the protector, it won't leave any residues. The protective film can effectively filter UV rays, protecting your eyes. In particular, during prolonged computer work, the screen protector counteracts the fatigue of your eyes.