Features: 1[3 Temperature Adjustment] The undershirt can be heated with one button, three temperature control, you can easily adjust the temperature you want. 2[Warm and Cozy] This heating vest can be paired with any outfit and is suitable for winter wear, warm and comfortable. 3[5 Heating Zones] The heating vest has even temperature distribution, comfortable body feeling and better warmth. 4[Washable] This heated vest is also easy to clean, no need to disassemble, you can wash it directly in water, no need to worry about leakage of electricity. 5[USB Powered] The heated vest is USB powered, which is very convenient and allows you to experience lasting warmth in the cold winter months. Item Type: Smart Electric Heating Vest Material: Cotton Color: Black Working Voltage: 5V Heating Temperature: 32-52 (3 adjustable gears) Package Included: 1 x Smart Electric Heating Vest 1 x Instruction