The rivets holding the hinges to the Udercover Tonneau cover come loose often ad have to be replaced. this has happened about 5 times fortunately the cover has not flow off killing somebody behind me on the freeway. I keep a ratchet strap with me to tie secure it to the bed. I would say that this is hazard, i was told by undercover that they designed it this way so that the rivets would give way without breaking the cover itself. I think there should be a reall for this product I AM VERY DISPLEASED