iVisor Glass is made with atomically strengthened IonGlassTM, which exhibits exceptional hardness exceeding that of tempered steel. This makes the surface nearly impossible to scratch, even with a knife. Precision-tooled for the curved screen of your Samsung Galaxy Note 4, iVisor Glass provides complete edge-to-edge screen protection. With full screen protection, iVisor's proprietary design allows for an effortless, bubble-free installation. The Samsung Galaxy Note 4 glass screen protector is 0.3 millimeters thin, features rounded edges to cover your full screen, and perfectly blends into your phone's screen. Once it's installed, you won't notice any difference in screen clarity and touch sensitivity. Completely scratch-proof, shock-proof, and bubble-free, Moshi's iVisor Glass full screen protector is like a bulletproof vest for your Samsung Galaxy Note 4 touchscreen.