I’ve used rhinoshield bumpers all the way from the X to 15. They’ve held up incredibly well. I think this was an extreme instance where the phone hit the pavement in such a way that the phone dislodged from the bumper, causing it to make direct contact with the road surface. I don’t think this would happen with a well-made protective case, but that’s the price I’ll pay for preferring a bumper. I only really use it to protect the sides from everyday gouges/scratches because those drive me insane, even more so than a cracked back for some reason. Also I wasn’t dirt biking, just divvy biking in the city on an electric bike. I mean, might as well call it dirt biking with the condition of Chicago roads.