【Pool Filter Balls Material】The filter balls are made of 100% recyclable polyethylene, lightweight material, high permeability, non-toxic, strong adsorption capacity and long service life. Weight: 1500g, can replace 54kg of pool filter sand. 【Significant Filtering Effect】Filter Balls for easy and quick cleaning of the pool. Filtration speed 4 times faster than traditional filter media, higher recovery capacity.It can capture tiny suspended matter, also filters grease from the water. 【Durable and Energy Saving】The pool filter balls can be washed and reused. Save energy, costs and other swimming accessories. (Tips: Put the filter balls in a laundry bag and machine wash them) 【Widely Used】The filter balls are not only used for pool cleaning filter system, but also can be used for water filtration in aquarium, swimming pool, filter pump, fish tank and even drain.