The heat pad measures 24"x33", provides full and comfortable coverage along the contours of the shoulders and back, and provides penetrating soothing heat to warm your body; the heating area extends to the neck and neck for more comprehensive pamperingHeating pad secures to the back and shoulders with buckles, lightweight edges, and retention straps that won't slip or loosen and keep the pad flat during use 4 heating levels optional, minimum gap between temperature ranges, easier to choose the level you want; 1/2 adjustable auto-off timer setting to avoid overheating and energy waste, very environmentally friendly The skin-friendly fleece is elegant and soft to the touch, which helps the heating wire to transfer heat more evenly; the entire pad is machine washable with the controller removed, extending its lifespan and staying hygienically soft at all times Wraparound heating pad automatically shuts off when overheated