Well, I think that the noble back of the phone is not blocked. Some will complain about the thickness of the frame, but the frame prevents the back of the phone rests. The latter is, however, so that firstly protected from scratches in rough shelf-space and secondly, the phone does not slip so easily around. It must consider whether a Bumper with a completely closed back, which provides even better protection, but the aesthetics of the device significantly more adversely affected to better their own needs past, or not. Personally, I've let two go back with closed back because of me Xcessor Bumper whole lot better like.
The edges are well protected by the bumper. The buttons can be pretty good use. The on-off button is covered, resulting on the one hand, that the IR transmitter is covered in it, on the other hand is not like other bumpers with recess at this point, the operation is very difficult, or with long fingernails can be done.
All in all a good product with reasonable price.