The case seems to good quality, the exterior is also high. If you try, however, the iPad to put in this envelope - which was extremely difficult - broke at one point of the inner plastic frame, what the function does not seriously affecting.
Out - in my estimation here - took the producer contacted me and promised me as a little compensation to send a voucher. But at this promise remained too! No more reaction.
When I wanted a few months later attach a screen overlay and the iPad had to take out from the envelope, broke the replacement also another corner of the inner frame, so that would be another use with risk of slipping out of the device connected ...
The casing was disposed of, which of course is a shame because the handling of the iPad in the envelope was much more convenient and - at least initially - more secure.