This is not your ordinary cheap film screen protector, it's tempered GLASS.
Made to protect the LCD from damage and scratches with specially processed transparent glass that has been reinforced to increase shock absorbency. The GLASS has been designed to have a slim thickness of 0.4mm and still maintain its high level of surface hardness of 8-9H. When installed, there are no air gaps between the LCD and the GLASS Screen Protector which means the touch screen's sensitivity is unaffected. To prevent any excess force from coming in contact with the edges of the screen protector we highly recommend that a case is used with the GLASS Screen Protector.