①. Product Description: Heating Pads, Thermal Pads, USB Heated Pads, Foot Warmers. ②. Pads Usage: - 【Fast Heating, USB Heated Pads】- These heated pads use a new heating technology. They are often made of comfortable elastic EVA material, with good cushioning, lightweight and portable. The heater has a convenient USB interface and is used for heating via USB cables. It has a large heating surface, even heat distribution, and the temperature can reach 50°C / 122°F. - 【Comfortable Materials】- Thermal insoles with EVA elastic fiber sole + heated far - infrared carbon fiber material to keep the foot comfortable and warm. They have excellent slip resistance and high temperature resistance, and are suitable for various outdoor activities. - 【Waterproof Design】- They are washable and reusable. The materials used are waterproof and can be washed directly without affecting the use effect. You can also clean them with a brush (not suitable for machine washing). Tip: They must be completely dry before use, and keep the USB port away from water when connecting the USB power supply. - 【Adjustable Column Size for DIY】- The electric columns can be cut to size according to your shoe size. The shoe size range is marked on the insoles for your convenience. The heated insoles are 4 - 5mm thick. There are lines drawn on the insoles, making them easy to cut. They are suitable for European size 41 - 46 for men and women. - 【3 Heating Modes】- This shoe heater is compatible with shoe warmers. It has a USB interface and requires a power supply (5V 2A). Put the insoles into the shoes and connect them to the power supply to enjoy the warmth. The heating is stable and safety is ensured, which is suitable for keeping your feet warm in winter.