Airhawk Comfort Seating Systems attach to the top of any existing seat, eliminating pressure points that cause numbness, fatigue, and other health-related issues. - DRY FLOATATION® Technology made up of soft, pliable neoprene interconnected air cells allows air to slowly move from chamber to chamber in order to evenly distribute body weight pressure. - Medically proven design based on 30 years of medical product development promotes consistent blood flow which reduces numbness and pain. - Breathable, stretchable nylon/Lycra blend outer cover attaches to seat to keep the AIRHAWK in place. - Unique, patented ISOFLO® Memory Control™ provides shape fitting capabilities while the driver is seated, allowing quick and easy on-demand adjustment. - Portable cushion overlay comes in two sizes to accommodate any driver, any seat. - 60-day "Good to the Last Mile™" satisfaction, money-back guarantee.