Features: Quick heating: The USB 5V belt electric heating element uses a metal heating element, which can quickly heat up and provide a warm and comfortable experience. Adjustable temperature: With temperature adjustment function, suitable temperature gears can be selected according to personal needs to meet the needs of different users. USB charging: It is convenient to use and can be charged through USB suitable for various charging devices. Comfortable design: The belt pad conforms to ergonomic principle, conforms to thecurve of the waist, and is comfortable and not easy to slide. Safety protections: Equipped with an overheating protections device, it will automatically cut off power when the temperature is too high, ensuring safe use. Metal heating pads are made Carbon Fiber materials, which have good thermal conductivity and durability Specifications: Material: Carbon Fiber Size: As Pictures Package Includes: 1PC Heat Pad for Waist Belt note: Due to the problems of lighting effectsand shooting angles, there will be certain tolerances in the product, please understand. Please allow 1-2cm errors due to manual measurement. Not Foldable