Features: Sturdy material: Made of polyester fiber, the water filter has a long-life, lighter and more efficient than the traditional filter medias. Reusable design: Being reusable, the swimming pool filter can be cleaned by machine or hands. Practical pool filter: The micro-suspensions that are not easy to settle can be treated by adsorbing oil and other impurities. Less backwash: Compared with the white filter balls, these balls require less back wash frequency. Long-Lasting Durability: Our pool filter balls can withstand heavy use and high pressure to ensure long-lasting durability and reliable performance, and are easy to clean and can be machine washed or hand washed directly with the equipped mesh bag. The high quality filter medias can extend the life of the filter and is a perfect substitute for filter sand, filter glass and other medias. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: Polyester Fiber Package List: 1 Bag Filter Balls