This seat cushion was a customer return. It was removed from the box for inspection and testing. It did not leak when inflated, and includes all parts and paperwork. Cushion size is 16 in x 18 in x 3 in.  This set includes the seat cushion, removable heavy duty cushion cover, hand-held air pump, repair patch kit, and user manual. The maximum weight capacity is 315 lbs. This seat cushion is model #MOS1816HD.