Wagan"s Ergo Comfort Rest 12v Heated Massage Magnetic Cushion provides ultimate comfort with heat, massage and lumbar support all in one. It features a combination of heat and massage for your shoulders, back and thighs. Provides instant relief for knotted back muscles, helps to loosen tense upper shoulder muscles and reduce stiffness of the neck muscles. Also use for your upper thigh and leg muscles. Includes a multi function remote control to adjust the heat and massage settings. Select from: heat only, heat and massage or massage only. Also adjust the intensity for both lumbar and shoulder areas: low/off/high. There are 8 strategically placed power magnets, 950 gauss each, help promote blood circulation and oxygen in muscle tissues and acu-pressure points by emitting a magnetic field. Lumbar support alleviates undue pressure from incorrect posture and protects lower spinal discs. It relieves painful pressure on tailbone, protects lower spinal discs and provides better spine alignment. Simply plug into your vehicle"s 12v DC outlet or operate it using 110v AC power at the home or office. Includes AC and DC adapters. The cushion is made out of polyester, vinyl and thick polyurethane foam padding. An integrated strapping system allows it to be secured to your seat and transform any chair into a more comfortable seat instantly. Cushion measures 40 inches x 20 inches x 2 inches and weighs less than 2 pounds. It is easily portable if you want to take if from your home to your vehicle to your office. Note: unplug the 12v plug from your vehicle when not in use.