This is the wearable heating pad that provides soothing therapy with three heat settings from 100° F to 145° F. Ideal for use on the lower back, arms, legs, or shoulders, it delivers up to four hours of soothing warmth on a single charge (on low setting) that helps loosen knots and speed circulation. Unlike similar devices that plug into a wall outlet, this unit is powered by a lithium-ion battery, enabling the wearer to go about their normal activities without being tethered to a power source. It secures via hook-and-loop fasteners and has a soft polyester exterior. Gray. Battery removes from pad for machine washing. Fits waists up to 55".