They are vinyl, with a thin foam backing, or at least mine are.
After five years, mine look pretty beat up, stained, dirty. I only put them on if I'm running 35k of gravel road.
But, I'm also not that concerned with a few rock chips.
2009 Escape 17B "Toad"
2008 Toyota RAV4 V6 Sport
North Vancouver, British Columbia
What happens to the hole when the cheese is gone?
- Bertolt Brecht