Features: 1. High-quality materials: Made of durable high-quality materials, it can be heated quickly and evenly through the built-in micro heater chip. 2. Recycling: It can be washed with water for recycling, but keep the interface away from water when connecting USB power. 3. Can be cut: 1 pair of size reference papers are included, you can cut them according to the size number as needed. 4.Practical: When connecting the USB cable to a laptop or computer, one pair of insoles can be heated at a time, which is a very suitable accessory for computer workers in cold winters. Suitable for all kinds of shoes. 5.100 Satisfaction: If you have any question, please feel free to contact us.We will try out best to help you. Notice: Please allow 1-3cm deviation due to manual measurement Actual color may be slightly different from the image due to different monitor and light effect Description: Material: Cotton Cloth EVA Size: One Size Package List: 1 pair x USB Heated Shoe Insoles with Cable