Description:  Electric Heat Vest Clothes Warm Vest Men Heating Coat.  Power Bank is NOT Included.     Specification:  Product name: Men's Electric Warm Heating Vest For Skiing Camping;  Material: Polyester;  Filler: Cotton;  Weight: approx. 350g;  Gender: Men;  Voltage: 5V;  Size: S / M / L / XL / 2XL / 3XL /4XL (optional);  Color: Camouflage/Black/Blue(Optional);  Power supply: Power bank(not included, you need to prepare or buy one);  Temp. Control: 45/35/25 degree Celsius;  Fiction: Intelligent charging heating, USB Charging, Temp. control;  Suitable season: Autumn, Winter;  Applicable scenes: Running, hiking, camping, cycling, sports.     Note:  The data above are recommended only, there is a certain error of 1-3cm, please understand, before you purchase, you have better to measure accoding to the picture, then choose a suitable size.     Feature:  Made from high quality polyester material, which is not only durable but also practical.  Smart heating vest possesses both a humanized heating design and a casual style.  Built to greatly strict quality control standards, resulting in its stable performance.  Excellent quality fabric and cotton is very comfortable and soft to touch and wear.  When worn, it can be more fit to the body because of its elastic fabric, which is of warmth and comfort.  Three-speed temperature adjustment, one-button heating, intelligent heating, suitable for wearing in various temperature environments.  Suitable for everyday wear, light outing, wild fishing, mountain climbing, camping and other outdoor activities.     How to use:  1 Remove the USB plug to access the charging power bank, press the charging power bank output switch, long press the chest temperature control switch for 2 seconds.  2 The red light flashes, it is automatic temperature control heating. After the red light flashes for 5 minutes, the automatic white light is the medium temperature control.  3 Manual adjustment is divided into three gears, the red light is continuous high temperature heating, the white light is continuous medium temperature heating, and the blue light is continuous energy saving heating.  4 Press and hold the chest switch for 2 seconds, and turn off the light to stop heating.    Washing precautions:  1. Take out the power bank and add it with a neutral detergent. Do not rub it vigorously or beat it. After washing, it is naturally ventilated and dried.  2. Do not use for a long time, please do not access the power bank.  3. Do not use hot water or strong acid detergent.  4. Do not use the wet clothes. After the rain, please turn off the power and stop using.  5. The usage time depends on the capacity of the charging power bank.     Package included:  1 X Electric Heat Vest Clothes (power bank is not included).