Apple iPhone 4/4s ScreenGuardz Pure® Premium Glass Screen Protector
Product Review (submitted on March 14, 2013):
I am disappointed in the Pure Glass. I have used this with a case that does not protect the edge of the Pure Glass. Within a month, I have found chips along the edges of the Pure Glass, and a crack at the corner.
The phone has not been dropped or abuse, but simply used in normal use and put into my wife's purse for storage (it's her phone). And no she doesn't drop her bag on the floor.
So buyer beware, if you use a case that has a lip to protect the edges of the case, then it's good (just check the sizing so it all fits). But if you like your phone case-less or use a case that still leaves the edges of the Pure Glass exposure, I would not recommend this for you.