A cool weather staple, the Aura Vest offers multiple levels of heat to keep your core warm. Quilted fitted vest with three heat levels at the push of a button! The vest plugs into a slimline Black Arrow branded power bank that slips into the inside pocket. The power bank can also be used to charge your phone on the go! The wide front placket conceals a waterproof zipper. The vest heats front and back and on the highest setting with a fully charged power bank you should get around 3 hours of warmth.