Heated scarf, It needs to be CONNECTED to the power bank(not included) when using it. It supports hand washable then let it dry naturally. Does not support machine washable. Please take out the portable power bank before washing. Heated scarf rechargeable, Please fully CHARGE the power bank before use. It has 3 adjustable temperatures. When the color of the button changes to red, green and blue in turn, it will provide the temperature of 55/50/45. Heated scarfs for women rechargeable, far-infrared heated system has overheat protection function. After using it for more than 45 minutes, it will automatically turn off the heat supply and provide a comfortable constant temperature for the neck. Electric Scarf, the size of the scarf is 80x10 cm. It is made of highly breathable polyester fiber fabric, lightweight and soft cotton, which will make you feel comfortable and warm. Heated scarf for men women, it is the best and stylish gift for your friends and family.