Five heat settings between 77 and 113 F, held steady by a thermostat instead of cycling hard on and off - which is what stops a massage table developing warm and cold patches. A digital controller sets a shut-off anywhere between one and eight hours. It measures 71 x 30 in, sized to a standard massage bed, and draws 60 W on 110 to 120 V. Polyester at 3.5 lbs, rolling up for storage between sessions. White throughout, with a plain surface that takes a sheet over the top.