With a 2-pack BlueBuilt screen protectors, you always have a spare on hand. This way, you can replace a broken screen protector with the other glass screen protectors from the duo pack. BlueBuilt screen protectors are made of glass and protect your phone well from bumps and scratches. Glass resembles your own screen, so you hardly notice that there's a screen protector on your device. You can combine a BlueBuilt screen protector with a phone case without any problems.