For Style:
The design of the casing like it very much because it acts simple but yet elegant and feels high quality and stable.
It is a little darker than in the photos, but is not a negative thing for me in real.
In the tab is a magnet which holds the sheath well and you can also back so not Fix, when putting down in the horizontal position. interferes.
Functionality:
The cards and the money sit perfectly in the envelope and make accidental slipping out impossible, only the bottom card is a little more difficult to take out, but one does not have to push through all the way down. With coin it works as well, but the removal is a little difficult.
The mobile phone itself really budge in the shell and all buttons / ports are easily accessible. Removing the mobile phone was very complicated at first, but the second time it was, with the right technique, a piece of cake.
The casing makes the phone a lot thicker, which makes them look unattractive in your pocket wearing. But since this is all BookStyle cases, this is again not a drawback for me.
I can see the people who are after a BookStyle envelope, this really recommend it.