Have a NEVER used (received as a gift; still in the box) Air Innovation air cushion (13" x 12") and a hardly used Sqwoosh GEL seat pad (12" x 11"). Will separate or buy both. Use the air pad for the rider and the gel pad for the passenger or vice versa. Buyer pays for shipping in CONTUS. Let's discuss. Text me for fastest response: 508-962-1031.