PROTECTIVE DESIGN Thanks to the use of tempered glass, you can be sure that your iPhone will be protected. Protected from scratches, stains and everyday heat. HEAT RESISTANT Tempered glass material is tempered. Designed to resist heat, so you can go out in the sun knowing your phone won't overheat. and it will go out in the middle of an activity or an important text message. ULTRA THIN The screen protector is thin. Designed with an ultra-thin tempered glass material, 0.3mm thick to be exact. So thin that you will barely notice it is there. there.