This is the heated bolster that delivers soothing warmth and support to the lower back. Strategically shaped to tuck between the sensitive lumbar region and the back of a desk chair, couch, or even car seat, the cylindrical pillow supports the muscles and spine to encourage proper posture while delivering a gentle heat that helps promote blood flow and ease tension. The heated cover, made from cozy polyester, can also be unsnapped to drape flat across the shoulders, legs, or other aching area. Easily portable for use at home, in the car, or at work, it plugs into AC in a wall or into a vehicle’s 12V adapter. Cover on inner pillow is machine washable. Gray. 16" L x 14" W x 1" D. (1 1/2 lbs.)