Can only agree with the previous speakers: The shell sits just perfect. For the money, a clear recommendation! The back is very smooth, so polished, after which you can see fingerprints etc. quickly (but is only the reverse side). This can easily be removed with a cloth. On the sides it is roughened, thereby one has a better grip than without shell and all keys are 1A cut. In addition, it carries on at the sides in my opinion, not too much. Very nice!
One more thing: It's not a very soft silicone sleeve. Furthermore, I was personally very happy because these soft stuck in his pockets, but what is sometime annoying then. Here everything is right.