If you guys have a Hobby Lobby. I bought a piece of leather for $24.00.
It was a rather odd shape, so I couldn't tell you exactly the width of it, but it was a yard long.
I then went and bought a sturdy piece of foam, and some spray adhesive ( Same place ).
Worked like a charm, taking special care as I stretched it around the foam.
Grab some velcro and attached it to the seat.
RIDE!