DEWALT DCHJ065 Heated Jacket with Removeable Sleeves 2X-Large OUTER SHELL - Cotton / INNER SHELL - Polyester. Up to 5.5 Hours of runtime on low setting using the 20V MAX* compact 1.5 Ah battery. USB power source with 2 USB power ports. Extension allows you to place it in front or back pockets. LED controller with 3 temperature settings (high, med, low with pre-heat function).