1Adopts far-infrared carbon fiber, with uniform heating, high heat conversion rate, rapid heating, soft and comfortable. 2Suitable for different types of shoes, meting different demands. 3Heating insoles can be placed in the existing shoes to use, and does not affect the beauty and comfort. 4Two feet separation design, flexible and convenient to use, suitable for a variety of people. 5Equipped with carbon fiber heating material, low power, energy saving and environmental protection.