Are you handy? you can buy a wet suit type material and just wrap the seat. the way to folds forward if you tucked it like a foot each way and then locked it down// smoothed it out it would stay in place.. same with the back, pull ii through between the cushions and under the seat bottom before you loco it down, then leave a foot or more hanging over the back..

wouldnt necessarily be a cover, but might only be $30-40