Features: Quality Material: This heated insoles is made of EVA stretch and velvets material, which has good cushioning and keeps your feet warm in cold weather. USB Heated Insoles: The heated insoles has a USB interfaces, which is suitable for power adapter heating and also mobile power heating, and can be heated to about 40-65. Cut Freely: The heated insoles can be cut to the size you need, and the shoe size ranges and marking lines are given on the insoles, which is easy to trim. Washable: Washable and reusable, but not machine washable. Please note that it needs to be dried after washing, and it must be completely dry before use, keep the USB port away from water when connecting the USB power supply. Service: Your satisfaction is our priority, please to purchase our product at ease. If you are not satisfied with our product or have any questions, please to contact our. Specifications: Material: Velvets, EVA Foam Color: As The Picture Shows Size Options: S/M/L S: 35-38 Yard (230mm-250mm) M: 39-42 Yard (256mm-276mm) L: 43-46 Yard (283mm-303mm) Package Includes: 1 Pair Heated Insoles note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!