This foot heater is perfect for the cold season, warming your feet with a comfortable temperature of 50-60°C. - USB-powered foot warmer Temperature range: Approximately 50-60°C Features: 1. Made of high-quality flannel composite fabric, it is light, soft, and comfortable, with excellent insulation and a long lifespan. 2. As a warming artifact necessary for winter, it heats at a constant temperature (40°C). It brings comfortable warmth to your feet even in cold weather, driving away the cold. 3. Universal USB interface, compatible with various charging devices such as adapters, mobile power supplies, car USB interfaces, and computers. 4. The portable foot warmer bag is easy to operate and can be used by connecting the USB interface without charging or a self-provided battery, making it more environmentally friendly. Material: Flannel composite fabric Color: Gray USB cable: 5V=1.8A (9W) 1.2m Net weight: 0.142kg Size: 29 x 29 x 2.5cm The USB cable is attached to the product. This is an imported product. It will be folded in half and shipped via Yu-Packet Post. Thank you.