Welcome to our store! Three heating modes: USB interface, power adapter, and power bank ensure you can enjoy warmth wherever you are. These warming insoles are easy to use, just place them in your shoes and connect the power to experience the cozy warmth. Made of soft fluff material, they are soft and comfortable to wear with exquisite craftsmanship. The heating is stable and safety is guaranteed. The heating pad can be cleaned, just make sure it is dried before use. Specification: - Condition: Brand new - Material: Soft fluff - Color: Brown - Heating time: 10 min - Optional size: - 35-36 (23x8x1cm/9.1x3.1x0.4in) - 37-38 (24x8x1cm/9.4x3.1x0.4in) - 39-40 (25x8x1cm/9.8x3.1x0.4in) - 41-42 (26x8x1cm/10.2x3.1x0.4in) - 43-44 (27x8x1cm/10.6x3.1x0.4in) Three heating methods are available: 1. The USB interface heats up, simply connect one end of the USB power cable included with the product to the computer's USB interface and the other end to the insole. 2. The power adapter heats up, connect one end of the power supply to the insole and the other end to the adapter. 3. The power bank heats up, connect one end of the power cable to the insole and the other end to the power bank. You can enjoy the warmth anytime, anywhere. Package list: 1 * Pair of warming insoles Note: The standard power of the heating pad is 5V/2A. If the charger's current is less than 2A, it may cause it not to heat up. When powered by a charger, the heating power is 6-7W. If you use the special adapter, the heating power will be 10-11W, providing 40% more heat than the charger. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service. Please note that the description above is returned as an English version. Ensure clear and accurate communication with your customers by avoiding HTML code and keeping the text description concise.