K & L Nylon Rim Savers

Very sturdy material that withstands the pressure from the tire irons very well, but becomes hard to retrieve once it's under the tire. I believe other such rim protectors come with little pieces of thread to hold them in place, but it seems like those bigger plate-like protectors that extend out longer are better designed.
Overall, not ideal but definitely useful. Also, best to get 2 sets (4 total) to make life easier.