Wheelchair Accessories - 18" x 16" x 4" seat Medline Air Cell Recliner Wheelchair Cushion: 18" x 16" x 4" seat Low Profile Air Cells on Back Cushion Provide Comfort Recliner cushion fits a standard recliner wheelchair or can be used on bedside chairs. High profile air cells on seat cushion provides maximum pressure relief. Interconnected air cells made of neoprene rubber adjust as the patient moves. Adjustable for deep immersion and constant low pressure. Comes with cover, hand pump and repair kit.