The Mainstays Energy-Saving One Window Panel is a modern and sleek addition to any room. This room-darkening curtain features a rod-pocket heading for easy installation. Made of polyester in a stylish black soot color, this panel measures 84 inches in length and 40 inches in width, making it perfect for any standard window size. With its energy-saving properties, this curtain not only adds a touch of style to your home but also helps to insulate your room and reduce heat loss.