【Material of Swimming Pool Filter Balls】The filter balls are made of 100% recyclable polyethylene, lightweight material, high permeability, non-toxic, strong capacity. Adsorption and long service life. Weight: 1400g, can replace 54kg swimming pool filter sand. 【Significant Filtering Effect】Filter balls for easy and quick cleaning of swimming pool. 4 times faster filtration speed than traditional filter media, larger capacity. It can capture tiny suspended particles and also filter grease from the water. 【Durable and Energy Saving】The recovery ball swimming pool filter can be washed and reused. Save energy, cost and other swimming accessories. (Tips: Put the filter balls in a laundry bag and wash them by machine.) 【Widely used】The filter balls are not only used to clean filter systems in swimming pools, but also can be used for water filtration in aquariums, swimming pools, swimming pools, etc., filter pumps, aquariums and even drains.