USB heating, intelligent control. Comfortable fabric filled with down cotton. Fast heating, high thermal efficiency, uniform heating, temperature up to 40~50. It uses 3D three-dimensional cutting to better fit the human body and is suitable for people with different body types. Important: Please note the width/chest/shoulder length in refer to the size chart to choose your size.Light and comfortable: The heated vest is made with light insulation, very light, waterproof and windproof and will help you stay warm all winter long without the You need bulky winter clothes. 9 heating zones and 3 temperature settings: There are 9 built-in carbon fiber heating pads in front and back, which allows you to feel the heat 360. Press the LED button to set the 3 heat settings available, white light for medium temperature 35C and blue light for keep warm at 25C. Smart/Fast/Long lasting/Warm: The USB plug is compatible with most 5V mobile power adapters on the market (not included), which can heat up quickly without radiation. After 5 minutes of continuous high-temperature heating, the temperature will automatically start to 35 C in 3 seconds to heat, which not only saves energy but also prevents burns. Hand/Machine Wash: Hand or machine washable. Healthy and winter gifts : Heated vests can help improve blood circulation to a certain extent and relieve rheumatism and muscle pain. Give warmth and warmth to the people you care about Health. The perfect gift for the upcoming Thanksgiving Tips for the application: 1. Unplug the USB 2. Access to the power bank (this product does not contain a power bank) 3. Press the power bank output switch 4. Long press the chest temperature controller (LOGO) 5. High temperature red light flashing, automatic continuous heating 6. The red light will turn white automatically after flashing for 5 minutes, and the light will be constant at medium temperature 7. Adjust the third gear manually, the red light is on at 45C for high temperature heating, the white light is on at 35C for continuous medium temperature, and the blue light is on at 25% heat preservation 8. Press and hold the chest control (LOGO) for 3 seconds, the light will turn off and stop heating