1. My iPhone I use primarily professionally, ie the whole day open, close ... so that extremely wears with time of Verschuss. The rubber coating on the edge of the shutter bursts away, the very thin material at the lower margin backed by the time the magnet free. It is better if you sewed the two materials would. That would keep better and above all longer in any case.
2. The plastic insert, no question that the iPhone fits like a glove, from a processing perspective, there are no defects, it bothers me, however, that I have to get every time from the envelope out my phone if I want to connect it to the Lightning Adapter because the existing Aussparrung only adapts to the charging cable of the iPhone. Again, you should provide a remedy.
While you might get craftsmanship itself help (Aussparrung zoom, tab on the magnet sew) but at this price it should be but to presuppose.
Whether it is ultimately a buy recommendation, everyone must decide for themselves ...