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. In addition to light control, blackout curtains can also help with temperature regulation and noise reduction. By insulating windows, they can keep rooms cooler in summer and warmer in winter, while also muffling outside sounds. This makes them a popular choice for improving comfort and privacy in homes and offices.