There are a lot of reasons why an OtterBox screen protector out performs the competition, but it really comes down to one thing — engineering. Every piece of fortified glass and advanced plastic goes through brutal rounds of stress tests to prove the design. We drop, scratch, toss, tumble and score, again and again. If the screen protector doesn't meet our standards, it doesn't ship. Because our glass screen protector and plastic screen protector options survive in the lab, we know they'll thrive in the real world. Not all screen protectors are created equal. Ours are a notch above.