Layered construction of the Milwaukee® M12@ Heated Women's Jacket is designed to help keep you warm on the job through fall, winter, and spring weather. The jacket's battery-powered carbon fiber heating elements help maintain heat across the back, collar, and front hand pockets. Its soft quilted shell is wind- and water-resistant to help shrug off weather. In cold temperatures, high-loft insulation and a brushed thermal lining help hold in warmth with fewer bulky layers to don and doff. The jacket is designed to work with the M12 REDLITHIUM™ battery to provide all-day warmth on a single battery charge. REDLITHIUM batteries offer more runtime, power, and recharges than conventional Li-ion batteries, with superior performance even in extremely cool or hot weather. The kit is complete with an M12 REDLITHIUM 2.0 compact battery pack and M12 Li-ion battery charger.Milwaukee Heated Gear is constructed with carbon fiber heating elements woven between the rugged exterior materials and thermal insulating liners, to generate and maintain heat across core body areas.