DAYJOY Premium 9H Hardness Tempered Glass Screen Protector film Cover for Fitbit Blaze[2-Pack] Only Design for Fitbit Blaze,Total 2PCS Tempered glass screen protector is made to protect the LCD from damage and scratches, with specially processed glass that has been reinforced to increase shock absorbency It has 9H strong anti-scratch, knife proof. Good touch feeling. Water and Oil proof on the surface. The entire surface of glass is High transparent(98%) and the back side is covered a strong sillicon adhesive for easy installation when installed, there are no gaps between the LCD and the glass which means the touch screen's sensitivity is unaffected. No bubble, very easy to use.