Milwaukee M12 3-in-1 Heated Jacket: Powered by M12 REDLITHIUM Battery Technology, the Milwaukee M12 3 in1 Heated Jacket combines a Heated Vest and weather resistant Outer Shell to set a new standard in cold-weather performance and versatility for the outdoorsman. Worn separately as a heated mid-layer or combined with the outer shell, the Heated Vest integrates (5) carbon fiber heating elements and advanced fabric-layering technology to distribute and maintain heat across core body areas and pockets. The wind and water resistant shell features noise-reducing fabric with Realtree Xtra Camo and high-loft insulation to maximize warmth while blending in with the natural colors of the fall, winter and early spring.