It's not urethane (like WW), I believe it's ABS plastic. The lip is very thin & rigid, so one frontal bump and the thing is toast. They are however resilient to underside scrapes, meaning yes it will scrape, but the scrapes are not visible. I managed to make mine last longer by reinforcing it w/ nylon tape on the underside. I've also been able to use a heat gun to straighten bends from frontal impacts.