Unfortunately, you can not assign half star, so 4 stars because of the following criticisms:
While the shell is "completely" closed, there is no way the sync - connect cable to charge your device, for example.
In addition, the magnet at the top is not too strong.
I expect here certainly no magnet which holds 50kg, but something more would certainly not wrong.
All in all a good cover at a fair price.
My personal rating: 4.5 stars. The half star deduction resultuiert for me from the weak magnet.