3-speed Adjustable Temperature Self-heating Vest Jacket. Features: 3-speed adjustable temperature 6 front and rear heating zone design Can be washed directly Double control switch, can control the heating area before and after High temperature red light, the Temperature can reach 65 degrees Celsius, heating time is 6 hours Medium temperature blue light, temperature can reach 55 degrees Celsius, heating time is 7 hours Low-temperature green light, temperature can reach 45 degrees Celsius, heating time is 11 hours The USB plug can be connected to the mobile charging power supply, which is simple and convenient Specification: Name: USB Charging Heating Vest Material: double-core fiber heating + polar fleece Material: Neoprene Size: see size chart Packing List: 1 x USB Charging Heating Vest 1 x USB Charging Cable. We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.