Sofa Shield Original Patent Pending Reversible Chair Slipcover
Sofa Shield Original Patent Pending Reversible Chair Slipcover, 2 Inch Strap Hook, Seat Width Up to 23 Inch Machine Washable Furniture Protector, Slip Cover Throw for Pets, Kids, Chair, Chevron Gray.
These worked out pretty well. I found that erring on the side of a little bigger and then tucking in the excess fabric would be the only way this would work. For example, the middle wedge is an odd shape (small seating section and larger back) and required me to buy the futon size in order to completely cover it.