The Heavy Duty Black Heated Work Jacket has a durable water- and wind-resistant duck fabric outer shell and fleece polyester lining. It has 5 heat zones, including at the arms. It is powered by a 20V MAX* battery (battery and charger not included). Set your heat setting with an easy-to-see LED controller with three temperature settings, plus a preheat function. Gusseted underarms stretch back for full range of movement. There is extra storage space with 2 large fleece-lined, riveted front pouch pockets, 2 exterior stacked tool and accessory pockets, 1 internal pocket with a hook-and-loop closure, 1 external, and 1 internal accessory pocket with zipper closure. An added extension allows you to place the USB power adapter in the front or back pocket.