Product Description:1. Uniform heating, high heat transfer efficiency, fast heating speed, soft and comfortable.2. Easy to use. Put on your shoes, turn on the power, and enjoy the warmth.3. Soft and comfortable, fine workmanship, ultra-thin design, maximum elasticity, thickness is only 4mm.4. Use waterproof material that can be cleaned directly. More convenient and cleaner, according to the free cutting line, the insole can be cut according to your shoesSpecification:Name: heating thermal insoleConditions: NewMaterial: 95% cotton + 5% spandex, carbon fiber strandNotes:The product does not contain mobile powerAlways need to move the power supply to the heat (recommended 5V2A mobile power)Package Includes:1 Pair Heated InsolesPrecautions for use:1. Please unplug the power supply when not in use to avoid prolonged heating.2. The elderly and children need to use under supervision.3. It is strictly forbidden to wear electric shoes for strenuous exercise to protect the heating chip.At last:1. Due to the difference of light and screen, the color of the product may be slightly different from the picture.2. Due to manual measurement, please allow an error of 2-5 cm.We will use the best products and services to help you.We hope that every customer will be happy every day ^ _ ^