The case in my opinion is not properly designed for iphone 5 / 5S. Indeed, the seam of the inner right and left folds abuts the volume buttons. The extraction of the phone is complicated. Fortunately they have anticipated that can push through the bottom opening. Over time seams inner folds rise and amplify this friction on the volume buttons. Hopefully this does not damage the phone comes with time. For me design review. In addition the leather starts to crack the 4 corners of the upper part of the case.
Too bad because the leather felt good and is pleasant to touch.