USB rechargeable heated insole: The heated insole adopts new heating technology, made of comfortable and comfortable EVA elastic material, with good cushioning, portable and lightweight, the heater is comfortable USB interface is heated by USB cable, the heating surface is large, the heat is evenly distributed, the temperature Up to 42 C/108. Cleanable and rechargeable use: This USB insole material is waterproof, washable and reusable, you can wash it with a brush, not machine washable, it should be noted that it needs to be dried after washing, it must be completely dry before use . Versatile, Best Gift Heated Insole Keeps Feet Warm In Cold Winter, Temperatures Up To 42 C/108, So Wherever You Go, You Can Stay Warm, Perfect For Skiing & Outdoors, Other Sports, Camping, Housework, Hunting , hiking, fishing, etc., is the best Christmas gift. all Products From Us Have Undergone Strict Quality Checks.if There Is Any Quality Problem Or You Are Not Satisfied With The Productcontact Us.we Will Give You The Best Solution.Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it