Color: Black Dimensions: 10*15cm / 3.93*5.9 inches 15*20cm / 5.9*7.87 inches 15*30cm / 5.9*11.81 inches 20*30cm / 7.87*11.81 inches 20*40cm / 7.87*15.74 inches 30*30cm / 11.81*11.81 inches Features: 1. Utilizes high-efficiency carbon fiber heating technology for rapid heating, energy conservation, and environmental protection, providing a long-lasting and stable heating experience. 2. USB power supply compatible with a variety of power sources, making it flexible and convenient for use at home, at work, and in a variety of settings. 3. Far-infrared heating principle deeply penetrates heat, effectively increasing perceived body temperature for a more comfortable and healthy heating method. 4. Highly safe design with no visible light and low electromagnetic radiation, ensuring safety and peace of mind, making it suitable for homes with elderly and children. 5. Lightweight and portable design, made of high-quality insulating materials, and a scald-resistant outer shell, allowing you to enjoy warmth anytime, anywhere. Products include: 1* Seat Cushion Heater Note: Please allow slight size errors (1-2 cm/0.39-0.78 inches) due to manual measurement. The actual product received shall prevail. Please also allow slight color variations under different monitors.