Opening the sealed bag takes the longest.
The cultivation takes place within seconds, then the shell is attached appropriately.
The shell is well processed, sits firmly enough and can be later still lose weight easy.
All controls, camera, etc. are properly accessible.
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However, it could be that the thin webs not hold laterally over the long openings. My daughter reports from the school of relevant experience with other cases. Next you can use the shells then anyway, then something needs to rework the edges.
This should only be an indication. One star deduction done by me only if it in this envelope also occurs.
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Addendum 14:04:15:
Just 16 days webs have held, then the only 1mm thin webs are broken on both sides. The plastic is too hard and when you press the buttons, it is not to prevent the webs to be moved.
Although one can live without these ridges, only the edge is no longer protected by the buttons on the edge.