Thanks Mark. Towels seem like a good choice as well. Do you find that it's difficult to keep them up against the back of the seat? My concern is that it'd just be annoying to have it bunch up at the bottom any time I lean forwardI use cheap cotton beach towels off Amazon or from a local Ollie's, keep a few in a small bag. 30x60 easily covers the seat body on my rx350, while 36x72 covers everything including the headrest. Just toss it in the wash after use.