The most disturbing of the envelope was the slightly rough back (inside and outside) which I found uncomfortable in the long run a lot. The "smooth" sites were uncomfortable from the haptics. I know of other TPU cases better. A ridge, there were of course as in other descriptions mentioned.
Envelope I had to throw 1er week unfortunately in the trash, because I could no longer touch.
Rather spend 10-15 euros more and perhaps bringing the Ringke merger also looks chic.
