Not to use for the university

Fail.
I can not recommend this product, unfortunately. Already in the filed few A4 sheets this hanging down from the folder out (see photo). To me, the take the folder in his backpack to the university and not only horizontally home would be on the table, the folder is thus useless. After a short time all the leaves will be buckled down.

I do not understand how the other reviewers can assign as many stars and so why Leitz offers a product, because the problem falls squarely on the first functional test.
Would remedy slightly wider rings, which keep the leaves.

Thus, unfortunately, only one star for an otherwise great folder, which is kept light, flexible and thus save space.