Lumbar cushion with heat features an invigorating massage motor and extra padding for the lumbar and other back areas. Use heat treatment with or without massage. Lumbar cushion fits any size chair with an adjustable strap. Design also offers easy-to-clean microfiber and easy-to-operate buttons on the side of the cushion. Lumbar cushion comes with an AC adapter (UL approved) for home or office use and DC adapter for use in vehicles.