Perfect Protection Long-Lasting Protection from Scratches, Bubble Free, Significantly Reduces Dust, Oil and Fingerprint Smudges HD Ultra-Clear High Definition Transparent glass ensures maximum resolution. Natural Screen Experience Optically clear that your device will be fully protected while retaining its natural beauty Easy Installation Before placing the screen protector,please first clean the screen by using kits in the package. If there are bubbles, please try to press the bubble by using your finger with a little force, and try to use a ruler or a credit card to help you with the problem,but a thin cloth pad is needed on the surface of the screen to avoid scratches the protector.