Not suitable for (silicone) Case

Did you, however, already a silicone case or similar the bag is too narrow.

Positive or negative may be only the thickness of the bag. Because the bag falls entirely of rather thin. Good for trouser pockets, but not if it gets dropped times in his pocket.

The only real drawback, however, I feel the ability of the bag to attract dirt. Sets her the envelope only to a slightly dusty or otherwise contaminated place, you have to stick anything on the bag.

All in all a pretty good cover, strong buy recommendation.