Men's Power Vest Heat from Therm-ic is a sleeveless jacket equipped with five heating elements in the pocket area and around the back to keep you warm in the winter. It is light and thin and very comfortable to wear and can easily be used under a jacket. It is connected to the USB battery and the heat can be controlled via your smartphone using the Therm-ic application.\n\nSpecifications:Five heating elements with even distribution of heat to the stomach, pockets, kidneys and back.Compact and lightweight.No animal materials.Bluetooth function.Works with all external chargers (not included).Estimated warm-up times based on Powerbank capacity:3000 mAh = 3 hours5200 mAh (Therm-ic Universal Powerbank) = 5 hours10000 mAh = 10hMaterial:100% polyamideFilling: 100% polyesterWashing instructions:Machine wash at 30°C maximum and spin-dry with caution. Replace the cap on the USB cable.Do not use fabric softener.Do not use bleach Therm-ic Men's Power Vest Heat Grey | Buy Therm-ic Men's Power Vest Heat Grey here | Outnorth