This silky-smooth screen protector is made of tempered glass that has a hardness level of 9H, which makes it one of the hardest screen protectors available. Additionally, it’s 0.4mm thick. Sir Lancelot’s Armor combines this innovative material with new manufacturing process to insure the easiest installation on the market! Using a reusable high strength adhesive only on the edges of the protector allows for easy placement. The adhesive is only under the color portion of the protector, leaving you without any bubbles on your screen. You’ll be impressed with how nice this screen protector feels under your fingers. Although this screen protector can still be scratched, it will do an excellent job at protecting the iPhone screen underneath. There is a 30-day money-back guarantee so that if something happens to your iPhone screen protector, whether it is scratched, shatters or has other problems,you receive your money back. There’s also a lifetime guarantee on manufacturer defects. Here at Quick Fix, we spent some of our time testing and trying a variety of protective products for mobile devices. Our experience with Sir Lancelot’s Armor was certainly the most memorable. The screen protector lasted through many strenuous tests that many others did not. For these reasons, we like to recommend this screen protector to customers after they get their device freshly repaired.