Description:1. One button heating, three-speed temperature control, intelligent heating2. Give a warm and comfortable feeling in winter3. General USB interface power supply Universal battery 5V/2A4. Infrared heating. No harmful radiation5. Waterproof and warm, anti-static, light and close6. Washable power supply interface uses insulation and waterproof treatment7. Long battery life, 5V voltage 10000 mA, continuous heat for 8 hours8. The battery is not including.Specifciation:Gender: Women’s PantSize: M/ L/ XL/ 2XL/ 3XL/ 4XLMaterial: Cotton and Carbon FiberColor: BlackNote:Manual measurement, please allow 1-5cm error, thank you.Package Included:1 X Smart Warm Trousers