The skirts are made out of metal and sit on the fender. I bought them from a guy in Fremont who had a '47 Plymouth Coupe with an expensive paint job. They attach very nicely with a draw bar at the top with each end having slots for mounting hardware, which I have to make. I have thought of trying the fiberglass ones Tim mentioned and if I find a good deal on a pair, I might. Cpt. Fred, I agree with you on the patina. You should see my '47 coupe, same paint condition but a little more coverage. Thanks All.