Material of pool filter balls:filter balls are made of recyclable polyethylene, lightweight material, high permeability, non-toxic, strong adsorption capacity and long service life. Weight : 200g. Significant filtering effect Filter balls for easy and quick cleaning of the pool. 4 times faster filtration speed than traditional filter media, higher recovery capacity. It can capture tiny suspended solids, also filters grease from water Durable and energy saving :Pool filter balls can be washed and reused. Save energy, cost and other swimming accessories. (Tips: Place the filter balls in a laundry bag and machine wash) Widely Used:The filter balls are not only used for swimming pool cleaning filter system, but can also be used for water filtration in aquarium, swimming pool, filter pump, aquarium and even draining. Package Contents: 200g Swimming pool filter ballsx 1