They stick well and stay in good shape for about a month. I didn't hit the things, but they're thick enough to stick out so they're the first thing to be touched if something gets too close. Obviously nothing is done with a more serious hit or anything from a big car with parts sticking out at different heights. But I wish I had gotten them sooner to avoid scratches and scuffs from the horrible parallel parkers. They aren't very long so the whole rear isn't covered because I wanted to make sure they go around the corners of the car as I think the impact is more likely to happen on a corner or at the very back. lateral than frontal behind.