The only reason i purchased this was because it was on sale now that the gopro 3 has come out. Its a bit fiddly to put on, but once you've done it a few times its not a problem. It does give the gopro a bit more protection, not that it really needs it. I have a white ski helmet and have the gopro mounted on the side. Because the gopro is now white it does seem to blend in a bit more, not that it matters. The other factor, hard to measure though, is that it gives it a bit of insulation from the snow and cold which may prolong the battery life?!