*Reusable Washable Filter: Replacing your paper filter cartridge is part of your routine pool maintenance, and regular cartridge replacement can be costly. These washable and reusable foam filters reduce your costs. *Extended working time: The purchase cost of this cartridge is slightly more than that of a paper cartridge, but it lasts longer than a cartridge. *Durable: This foam filter lasts longer than your paper cartridges and can be washed and reused multiple times. *Reusable and washable: It is recommended to change a paper cartridge every week, while these foams can be easily Washed and reused. *Keep water clean: Will be an excellent water purifier for swimming pools.