SGKOW Women's Heated Jacket with Battery Pack, Windproof and Waterproof Heating. From the Amazon listing... The women's heating jacket comes with five carbon fiber heating zones.The safe and quality carbon fiber heating elements generate consistent heat for 5 core body parts, including your back, waist and abdomen, helping to maintain body warmth, improve local blood circulation, and improve muscle pain. It's equipped with a compact 5V / 2A 10000mAh battery pack,it can keep your body warm for up to 8 hours after a single full charge. The mobile power bank with 2 USB ports can heat the vest and charge the mobile phone at the same time