Socks USB Heating Insole Electric Heating Foot Warming Insole Chargings Heating Washable Cutable Size Insole Winter Outdoor Warm Insole This heating insole, with high heating efficiency, can effectively relieve the cold in winter. It can be washed, safe and easy to clean, and the size can be cut. Users can cut it to the appropriate size according to their needs, which is suitable for most people. Features: Uniform heating, high heat transfer efficiency, quick heating speed, soft and comfortable. Full fever, flake fever. The thickness of heating plate is less than 1 mm, ultra-thin design. The marking is clear and easy to cut, according to the free cutting line, insoles can be cut according to your shoes. Washable, use waterproof material, can be cleaned directly, safe and easy to clean, more convenient. Easy to use. Just put on your shoes and turn on the power to enjoy the warmth. Specifications: Material: EVA Type (optional): Type1: size 35-40 can be cut Type2: size 41-45 can be cut Rated voltage: 5V Item weight: 70g / 2.5ounce Package size: 300 * 20 * 100mm / 11.8 * 0.8 * 3.9in Package weight: 80g / 2.8ounce Packing List: 1 * Insole Pair 1 * Instructions 1 * Power Cord