Colour:White Material:Polyester Size:30-50mm Package Contents: 1 bag * filter balls 700g Only the above package content, other 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. [Premium Filtration] Our pool filter balls not only have the advantages of strong adsorption capacity, fast filtration speed, long service life, reusable use, and low loss, but also have high filtration precision and sewage interception capacity, to tiny suspended solids that are not easy to settle and remove, ensuring that your swimming pool remains clean and healthy. [Wide Application] The filter is suitable for sand filter pumps for above-ground swimming pools, aquariums, fish tanks, filter pump, etc., Lighter and more efficient than traditional filter sand. Their high adsorption capacity and filter strength your pool water is and free of impurities, allowing you and yours family to enjoy clean water swimming. [Reusable & Eco-Friendly] Made of 100% recyclable material, the filter balls are reusable many times and easy to clean, making them a cost-effective and eco-friendly choice. You can wash the filter balls in the washing machine with mesh bag or by hand. 1.5 Pound pack of eco-friendly fiber filter media balls for use in pool sand filters. 1.5 lbs. of filter balls are equivalent to 50 lbs. pool of filter sand. The perfect replacement media for traditional filter sand, as the fiber filter media balls provide higher and more efficient water filtration. [Easy to Clean and Maintain] Unlike traditional filter sand, our pool filter balls are and easy to handle, 't clog your filter. The filter balls minimize the time you need to maintain your pool because of their long service life before needing to be cleaned; they are reusable and require less backwashing of your filter equipment.