The Wagan Heated Massage Lumbar Cushion is stylish and made for extra comfort. It is ergonomically designed and built for lower back support, promoting better posture. This cushion features a built-in motor which massages the lower back muscles with the flip of a switch. It relieves the back aches and pains while sitting. This cushion operates on DC power with an included adapter and provides an unparalleled feel that"s like the hands of a massage therapist. It is built-in heating element that provides gentle heat to the lower back. This cushion consists of durable and washable cover. It is ideal for car use, as well as office and home use with an optional adapter.