[Environmentally friendly and efficient] Using high-quality pool filter balls, they not only have strong adsorption and fast filtration speed, but also have low water consumption and long service life, making pool maintenance more worry-free and labor-saving. [Strong filtration capacity] These high-grade A-grade balls can effectively filter out impurities such as tiny suspended matter and poplar pollen. Their filtration effect is traditional sand filter media, ensuring clear and healthy pool water quality and enhancing your swimming experience. [Economical and ] The filter balls replace traditional pool filter sand. The filter ball effect is equivalent to 150 pounds of filter sand. It is light and economical, reducing the trouble of frequent replacement. It is a cost-effective pool maintenance option. [Easy to clean and reuse] Unlike traditional filter sand, these filter balls support machine washing and hand washing. They can be reused after cleaning. With proper maintenance, they can be used continuously for several swimming seasons, reducing long-term maintenance costs. [Widely applicable] Suitable for types of above-ground pools, aquariums, small water bodies, etc., compatible with a of sand filter pumps, easy to use and quick, it is an perfect choice for improving filtration efficiency. [2024 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 '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 . Colour:B:Blue Material:fiber Package Contents: 1 * Pool Filter Balls Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.