brand new and high quality brand new and high quality Features: 1. Far infrared carbon fiber, through a special manufacturing process, only 0.02cm / 0.01 "thick, soft sheet of heating material, even heating, high temperature conversion rate, fast heating, soft and comfortable 2. Safe and reliable, the USB interface output voltage is only 5V, the adapter output voltage is only 6V, and the voltage regulator for protection device, the two output voltage is lower than the body safety voltage of 36V. 3. Energy-saving environmental for protection. Power less than 8W, average consumption of 125 hours 1 kWh 4. Can be directly placed in the shoes, easy to save. Foot separation, flexible and comfortable 5. Power, USB socket, one end of the USB power line is connected to the computer USB socket, and the other end is connected to the insert. Technical data: Item Name: Washable USB Heating Shoes Pink Size: approx.27x9cm/10.63x3.54in Gray Size: approx.28x9cm/11.02x3.54in Color: pink / silver gray Maximum temperature: 55 Cable length: 150cm Washing and care: washing hands with water Package Included:1 pair of heating boots+1x1.5m USB cable (other accessories demo in the picture is not included.) Notes:Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you did. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!