Roller shades are a type of window covering made from a single piece of fabric that rolls up and down on a cylindrical tube. They are designed to block out light, provide privacy, and enhance the decor of a room. Available in various colors, patterns, and materials, roller shades can be customized to fit different window sizes. These shades operate using a simple mechanism, often with a pull cord or a spring-loaded system. They are easy to install and maintain, making them a popular choice for homes and offices. Roller shades can also be found in light-filtering or blackout options, catering to different lighting needs.