Winter warm jackets supports 2-zone quick heating and 3-level temperature adjustment, accompanying you through the cold season, perfect for winter daily commuting, hiking, skiing, biking, etc.. 2-Zone Heating: Winter heated jackets with 2 heating zones to warm your back and neck, promote bloods circulation and relieve muscle pain, accompanying you through the cold season. 3 Heating Levels: Support 3-level intelligent temperature control, long press to turn on, lightly press to shift, easy to adjust. carbon fiber heating wire, quick heating speed, uniform heating, high temperature resistant and not easy to break. USB Power Supplys: With 5V USB plug, compatible with most chargers and power banks in the market. Use 10000mAh power banks(not included), it can last about 8 hours in low level. Warmth Locking: Made of fabric, high density and windproof, firmly locking the warmth. Warm padding inside, soft, breathable and comfortable. Support machine wash and hand wash, gentle washing can extend the lifespan of the heating pad. Wide Application: Heated jackets for men and women, lightweight and comfortable, perfect for winter daily commuting, hiking, skiing, biking and more. It is a nice for family, friends, colleagues, outdoor enthusiasts, etc. Specifications: Color: Black Material: 100% Nylon Reated Voltage: 5V Size: S / M / L / XL / 2XL / 3XL / 4XL(optional) Package Size: 400 * 200 * 30mm/ 15.7 * 7.9 * 1.2in Package Weight: 600g/ 21.2oz Packing List: 1 * Heated Jackets