New Pool Filter Material: Pool filter balls are made of high quality eco-friendly polyester fiber. It not only has the advantages of strong adsorption capacity,high dirt interception capacity, and fast filtration speed, but also has a long service life, is reusable and has low water consumption, the swimming pool maintenance will improve extremelyReusable: Filter media balls are different from sand, these reusable filter balls are machine wash friendly and you can clean them whenever needed, and can be reused after cleaning. With proper care and handling, the swimming pool filter balls can last for several seasons, indispensable accessory for swimming pool.(never use clarifiers with these filter balls and check and clean your filter balls as needed usually once a month)High Efficiency Filtration: These filter balls can filter tiny suspended solids that are not easy to settle and cottonwood pollen that fall into the pool, filter impurities as microns, and the filtration rate is higher than other sand filter media. perfect alternative to sand and filter glass, ensuring your pool water crystal clear, let you and your family enjoy the swimming pool more happily2025 New Upgraded Cost-Effective: These pool filter media balls can efficiently replace traditional swimming pool filter sand. It is lighter, more eco-friendly, and more effective. What's more, filter balls won't clog your filter, high-quality fiber filter balls can extend the life of your sand filter pump for above ground pool. 4 pounds of filter balls are equivalent to 150 pounds of filter sand, which can meet your needs and replacement, provide a nice pool experience for youMultipurpose: The pool cotton filter media balls suitable for sand filter pump for above ground pool and aquarium, fish tank, filter pump, etc, wide range of application, excellent filtration performance, lighter and more efficient than traditional filter sand. Reduce filter cleaning and maintenance work, saving a lot of time and energy