It will flake, but honestly after a couple of days, it will stop. Mine flaked away at the corners. It lasted a day or two. After the pieces essentially flaked away all was good and no more flaking issues.
Also the plastic will look like crap on anything other than the white after a couple days of just sliding it in and out of your pocket.
Besides that, it is very protective with little bulk and no silicone to stick to your pockets.