Pool Filter Balls 2100 g PEWith the pack of filter ball, you can filter out the smallest impurities in the water, which will bring your clean and comfortable swimming pool back! Durable material: Made of PE, the water filter has a long life, lighter and more efficient than the traditional filter media. Reusable design: Being 100% reusable, the swimming pool filter can be cleaned by machine or hands. Convenient usage: Just pour them onto the machine to start filter, the pool