CORE Performance Work Wear® Outer Layer Series includes 6490 Heated Jacket with Removable Sleeves. Offering low, medium, and high heat settings as well as 2 heat zones on chest and back, battery-powered jacket has fleece lining, can be converted into vest, and offers adapter extension wire to connect to such alternative power sources as tool batteries. Outer shell is resistant to water and wind, and heating zones are activated via touch heat control button on jacket exterior.