The Heavy Duty Black Heated Work Jacket Kit has a durable water-and-wind resistant duck fabric outer shell and fleece polyester lining. It has 5 heat zones, including at the arms, powered by the included 20V MAX battery. Set your heat setting with an easy-to-see LED controller that has 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 hook-and-loop closure, and 1 external and 1 internal accessory pocket with zipper closure. An added extension allows you to place the USB power adapter in front or back pocket.