Great for the office, home, and automobile, this cushion provides a soothing massage to the lower back. It can also provide heat with or without the massage. Buttons on the cushion's side turn the massage and/or heat on and off, and the cushion has an adjustable strap to hold it in place on a chair back or seat--there's also a carrying strap. The cushion can be plugged into a wall socket with an AC adapter or into an automobile lighter with a DC adapter. (Both adapters are included.) Filled with firm foam, the cushion has a gray terry-like polyester cover that can be cleaned with a damp sponge. The cushion is 13-1/2 inches wide, 12-1/2 inches high, and 3 inches thick. It carries a one-year warranty against defects. --Fred Brack