Description7Heating Panels 3 Temperature Control - 3 heating level from 45 to 65. Perfect for outdoor activities like snowmobile, motorcycle, mountain, camping, hiking, ski, Fishing, Hunting or office routine and business. Good for use during fall and winter..Size S is suitable for 80-150 catties.Size M is suitable for 150-220 catties.The portable lipo battery can also be used as a power supply for your phone or other devices.Health Care Heated Jacket - Help promote blood circulation, relief pain of muscles. Best gift for parents and families for coming Thanksgiving and Christmas..Safety - Built-in thermal protection module. Once it is overheat, it would stop until the heat return to the standard temperature. Support Hand/ Machine/ Dry wash..Note: The product does not include batteries..