Unfortunately, it is very slim fit. The iPhone 5S fits well purely from the wide ago, after it has been stretched for some time. The height of the case is very tight. If the iPhone falls down times, it may be possible that it falls so unfavorable that it is damaged in spite Case.
I have to order my iPhone a transparent Hard shell. This is relatively thin. But still it does not fit with the iPhone in the leather case. That is, you can grab the iPhone only in the leather case, if you do not shell drum. If so when get out of the leather case drop the iPhone is "vulnerable".
Therefore, the case should be 2mm per side to be wider. Then the iPhone fits in well with casing and is always protected.
Besides these 2 small points that case is very good. The opening and closing mechanism works very well. The iPhone is held securely. Visually, it corresponds to the product images.
For all this I can only recommend looking for a good, qualitative and safe case.