General description The Filter Balls are made of ultra-light and environmentally friendly polyester, offering excellent durability, water permeability, and drainage. These highly elastic pool filter balls effectively filter impurities from the water quickly and powerfully, ensuring a cleaner pool. Technical specifications Weight: 200g Material: Polyester Usage Suitable for pool filtration systems, swimming pools, aquariums, and filter pumps. Easy to replace and does not clog filters, requiring less backwashing for maintenance.