It is not very good.
- The pen (see photo) foresaw a blunder which would have damaged the screen.
- The edges of the shell are visibly bent by heat and unformed, that may explain why some models on the shelves do not hold well. However the tablet stays put in my shell.
I can not comment on the given time (seams and matter), but I would not fail to put this comment in days if necessary.
In the vertical position, the support is unsatisfactory, as too low relative to the center of gravity: the rocker tablet. The solution is to base létui back of an object to over-slightly higher.