Features: Premium Material: The swimming pool filter balls are made of polyester. Strong adsorption capacity fast filtration speed long service life reusability. Efficient Filtration: Swimming Pool Filter Balls provide efficient filtration by trapping dirt debris and contaminants in the pool water. Improved Water Clarity: By filtering out impurities Swimming Pool Filter Balls help to improve water clarity making the pool more inviting and enjoyable. Easy to Clean: The filter balls are easy to clean and maintain requiring minimal effort to keep your pool water crystal clear and healthy. Nice Service: Please contact us when you have any questions about this product we will try to solve the problem for you as soon as possible. Specifications: Material: Polyester Package Size: 24*5*29cm includes: 1 Set * Filter Balls