Technical specifications-Material: 100% polyethylene. Diameter: 50-60 mm. Weight: 700 grams, which can replace 25 kilograms of filter sand. Professional design-high water permeability, light weight, high efficiency, excellent filtering effect, environmental protection and recyclable.EfficientCompared with traditional filter media, the new generation of filter balls has faster filtration speed and greater collection capacity. Can be washed. long lasting. Wide range of applications-swimming pools, swimming pools, filter pumps, aquariums, etc. Offen filter ball for swimming pool swimming pool filter pump aquarium If you want to climb into your swimming pool, you should be prepared a lot at any time of the year. For this reason, proper cleanliness and hygiene are essential, so that your swimming pool appears clean and clear at any time of the year. The filter ball is easy to clean, thus protecting the environment and your wallet. It is 100% recyclable and can be reused many times by simple machine or hand cleaning. (If necessary, just wash with a small amount of detergent at 30 water temperature). - Made of 100% recyclable polyethylene and 100% recyclable materials - 700 g filter ball replaces 25 kg filter sand-lighter and more efficient --Filter suspended particles, high adsorption capacity, flow resistance is less than filter sand. - Easy to use: Just remove the existing sand/glass residue from the filter container and clean it. Then simply fill the filter ball and you are done. Specification: Material: Polyester. Diameter: 50-60 mm. Weight: 700/1400 grams.