Blackout curtains are specially designed window treatments that block out light from outside. They are made from thick, opaque fabrics that prevent sunlight from entering a room, making them ideal for bedrooms, home theaters, or any space where darkness is desired. These curtains can also help with temperature control by insulating windows. In addition to light blocking, blackout curtains can provide privacy and reduce noise from outside. They come in various styles, colors, and sizes to fit different decor needs. Many people use them to improve sleep quality, especially in areas with bright streetlights or early morning sunlight.