Nitro Glass is a premium tempered glass screen protector that's hammer tested! This uniquely strong protector is made of highly engineered tempered glass that can handle anything you throw at it. Since its glass, it doesn't have any of the distortion or finger drag that is possible with other plastic based protectors. Additional Nitro Glass benefits: Tempered glass; Virtually invisible; Scratch resistant; Hammer Tested; No sticky residue if ever removed. CAUTION! This product must be installed in a dust free environment! Product is not designed to be reused. Applying excessive force while installing or removing product may cause damage to Nitro Glass. This product is glass and may be susceptible to chipping or breaking along the exposed edges. It is highly recommend to use a case or bumper to deter from possible damages. Available Colors: Green, Orange, Pink, Black, Blue, White, Red, Purple.