The role is made of hard plastic and is therefore capable of the plans / drawings to protect. Even against rain it is very good. However, the quality really poor. (Sure you can for the price do not expect much) The first problem is the one that the cover does not really fit and is easy to remove by pulling. Although this was screwed. The second problem, which I see as a rough design flaw is that the role of the various height settings no locks. Even the slightest movement can the role again "coincide". If now have plans in the role they are pressed and get buckling or "dog ears". This must not happen.
Maybe I have just been unlucky and get a product, which has a manufacturing defect.
