Now up to 2.7x stronger than tempered glass, but just 0.29mm thin. UltraGlass 2 screen protectors are our strongest and most durable yet. They're engineered to look and feel just like your iPhone screen and protect against impact, scratches, cracks, smudges, fingerprints, and more. The glass contains an antimicrobial treatment to protect the product from discoloration and degradation.