iFlash Premium Tempered Glass Screen Protector: Crystal Clear & Bubble Free 0.3mm thickness edition - For Apple iPhone 4S/4 - Retail Packaging 0.3MM SMOOTH REAL GLASS: Feels as smooth as regular glass. It's only 0.3mm, you'll hardly know it's there. TRANSPARENT CRYSTAL CLEAR DISPLAY: You can keep your retina display clarity and reduce fingerprint at the same time. SCRATCH TERMINATOR WITH 9H HARDNESS RATING: Each screen protector has an 8H to 9H hardness rating, providing you outstanding protection from knives, scrapes, cracks, keys and general wear and tear. BUBBLE FREE: The film get you zero to very minimal bubbles during application. 1 YEAR MANUFACTURER REPLACEMENT WARRANTY