Appearance:
The shell looks very elegant and is well made.
Function:
It does what it should. After a fall of about 1 meter height on the kitchen tiles my phone had gotten nothing. It does not mean it in the envelope was but I also have a much safer feeling since I have the envelope. The magnetic closure keeps the lid tightly closed.
Size:
The Sony Xperia Z3 fits perfectly, all the buttons are exposed. Take pictures with the camera in spite of shell or music can be heard with headphones absolutely no problem. On the sides of the casing is over slightly, which also Stürz should represent on the edge of a problem. By Cover the phone is twice as thick as without, but still fits easily into your pocket.
The only blemish so far identified:
I close the lid when using the cell phones like on the back. Thus, a small tear has emerged in lining, because the shell is not designed for it apparently. However, since this plan does not affect the function or stability, this remains in fact a purely optical flaw. And since this concerns only the inside, this is clearly negligible.
Conclusion:
In my view, after a strong buy recommendation. For the price you really can only marvel at the quality.