Features: Winter Supplies: Suitable for outdoor activities in mountain climbing and severe cold climate to prevent neck frostbite in low temperature climate. Comfortable Fabrics: High-quality mink velvet, delicate touch, warm and breathable. Four-speed vibration massage and three-speed intelligent temperature control. No fear of washing: Washable heating system waterproof and non-leakage product can be immersed in water as a whole, and the power interface is practically insulated and waterproof. USB Interface Design: You can use 5V mobile power supply, output voltage is only 5V, which is absolutely safe and reliable. The entire neck is heated in a large area and heats evenly. Specification: Name: USB Electric Heating Scarf Output voltage: USB/5V Safety voltage on human body36V Size: 80cm*10cm/31.49*3.93inch Material: mink velvet Weight: about 165g Color: dark grey, light brown, dark blue, white, pink, purple, red(optional Packing List: 1*USB Electric Scarf