1. The carbon fiber heating element is woven into the inside of the socks and integrated with the socks. It can be pulled at will without affecting the heat generation. 2. 3 levels of intelligent temperature control, 1st level about 30 degrees Celsius, 2nd level about 40 degrees Celsius, 3rd level about 50 degrees Celsius 3. Hidden battery pocket, thoughtful design does not affect the appearance 4. The interface is insulated and waterproof, so there is no fear of washing (the washing machine needs to be put into a laundry bag, otherwise the strong stirring force of the washing machine will damage the wire) 5. Can be connected to power banks, notebooks and other power supplies 6. The battery box is powered by 6 AA batteries (battery not included) 7. User: unisex 8. Material: cotton
