Cloth filters are devices made from woven fabric that are used to separate solids from liquids. They work by allowing the liquid to pass through while trapping larger particles in the cloth. Commonly used in various applications, such as coffee brewing and water purification, cloth filters can be made from materials like cotton, polyester, or nylon. These filters are often reusable, making them an eco-friendly option compared to disposable filters. They come in different sizes and mesh densities, allowing users to choose the right filter for their specific needs. Proper cleaning and maintenance can extend the life of cloth filters significantly.