Airhawk R Cruiser Seat Pad The last mile can feel as good as the first, thanks to Airhawk's exclusive Shape Fitting Technology. This patented system eliminates painful pressure points and promotes consistent blood flow for a longer, more comfortable ride. Memory foam can't do it. Gel seats can't do it. Only a genuine Airhawk can do it. Your sitting muscles will thank you. Features Center cutout area runs from front to back of cushion Re-designed cell geometry improves airflow under the rider no hot seat Back cutaway allows for a tail bone relief area with a tapered transition for increased comfort Cushion comes standard with cover, attachment loops, and cruiser straps Cushion material Polyurethane Cover material stretch polyester material top cover, side panels are 3-layer knit polyester providing air circulation Fluid-proof, non-skid base is easy to clean and durable Dimensions Large 14 1/2 Wide x 14 Deep x 2 Tall Small 11 Wide x 11 Deep x 2 Tall Note Ships as Polyurethane version.