Milwaukee® heated hoodies offer adjustable heat settings for comfort in a variety of demanding work environments. They feature carbon-fiber heating elements, along with durable exteriors and thermal liners that help to distribute and maintain heat across core body areas. In fall and spring months, the heated hoodies can be worn as rugged outer layers. In harsh winter conditions, they offer a solitary base layer that helps to generate and hold heat close to the body. Use with Milwaukee M12™ REDLITHIUM™ batteries.