NEW, most technically efficient and most powerful heated jacket with PRIMALOFT and Windblocker materials. Its heating elements are powered by batteries with the possibility of BLUETOOTH control. Therm-ic heating technology fights against extreme cold by dividing the warm into 6 places on the abdomen and back. The Therm-ic Windblocker outer membrane protects against the wind, while the PRIMALOFT lining ensures good thermal nsulation and breathability. POWERBANK is not included, purchased separately. Therm-ic POWERBANK can be found in Accessories. The heater works with all external chargers. Integrated bluetooth: you can easily regulate the required heat via the Therm-ic App from your smartphone. Simply plug the "U-PACK cable" (included) into the USB cable in the jacket pocket and then connect the power bank (not included). The power bank can also be connected directly, but then the heat cannot be regulated. Insulation and breathability: Therm-ic Windblocker windproof membrane on the outside blocks the wind and at the same time provides optimal breathability. The PRIMALOFT lining is an unrivaled material on the market in terms of insulation and breathability. Maintenance instructions: Only gentle hand wash (maximum temperature 30 C). Before washing, be sure to remove the batteries and attach the protective cover to the USB cable against intrusion. Follow the maintenance instructions inside the jacket. DO NOT USE BLEACHER OR LAUNDRY SOFTENER.