Well I've been in rallying for a long time and have been looking for rally style fenders for my 5th Gen 4Runner. They meet all requirements. Now there's a word of caution, I had to cut them out with a jigsaw to fit my slider but they worked great. They are made from 1/4 inch thick plastic, not the fiberglass reinforced rubber you typically see on large truck covers. Easy to cut and drill.