It is nice that you can make calls with a closed envelope. For this purpose, a recess in the front of the earpiece. Even the volume buttons are accessible through the shell and marked by an embossing.
The fact that the original back cover is omitted, thickness bears the overall package regarding. Not too much on. The S5 mini has failed with its 9.1mm thickness so slightly pudgy, as even the S4 mini. Since accommodates quite. It is also good that you can load, without having to open the envelope. The annoying plugs for the USB port as the S5's mini fortunately the S5 not available.
For my previous S4 mini, I had the Fliphülle from Mumbi. Very good protection, my unit has it survived several falls without prejudice. But this is much thicker compared to Samsung's Fliphülle for S5 mini. For S5 mini I have therefore resorted to the original, what I would do so again. So far the phone has not yet fallen into the envelope, I hope, the protective effect will be sufficient for that.
Buy recommendation!