Review on Foldable Universal Access Portable Rooftop by Rui Knain

Very unstable version. The materials are great, but since the 'hook' part that goes through the doorknob is the only attachment point, any force applied other than downward creates a tipping motion. If the bottom material was rubber it might help stabilize it, but it's hard, smooth plastic so it slides easily over the door frame (which will rub off your paint and probably knock you out of the car...like me ). ). i will send it back