Have this envelope now for some time, is for the backpack and go well suited, but you will not protect sufficiently against strong, sharp shock. In my case, unfortunately, a small crack is despite envelope arrived in the display, but this nunmal no hardcover shell.
As a criticism, I would like at this point that attach far too small zippered pocket in my eyes. You get little pieces of paper and / or the charger into the small side pocket, I find a shame could have been solved better.