General description The Bestway Flowclear Polysphere Filter Balls (item number 58475) are a highly efficient alternative to traditional sand filters. Made from 100% PET, these filter balls provide excellent filtration results while consuming less energy, ensuring your pool water is clean and clear. With a longer operating life compared to sand, they are easy to wash by hand and offer a lightweight solution for pool maintenance. Technical specifications Material: 100% PET Diameter: 5 cm Weight: 500 g (equivalent to 18 kg of sand) Compatibility and accessories Suitable for all Bestway sand filters Usage Efficiently cleans pool water Low pressure increase compared to sand Easy disposal after use Other information