I have a metal roll up cover. Although it takes up some room in the bed, with a 5th wheel it works great. Can even roll the cover closed and lock to protect anyone from stealing the hitch. We use our truck as a truck, hauling all kinds of things and although you lose the front of the bed, its better in my opinion than the tri fold covers that block the back window. It does remove, but haven't had a reason to since we got it. It was better at keeping things dry when it was new, right now the side gaskets are worn, but they are replaceable.