Use only high-clarity, ultra-hard tempered glass to protect your phone's screen. The glass is 9H scratch-resistance tested, so it's ready to stand up to your keys, tabletops, s&, & other abrasive conditions. At just. 33 mm thin, Survivor Glass goes on easy & practically disappears, so it works with most open-faced cases. Survivor Glass is kiln finished to follow your Galaxy S8's dual curved-edge Infinity display. No more edges to spoil the view.