1、Eco Friendly: These washable and reusable filter sponges will reduce the consumption of paper filter cartridge, and sponges are made of eco friendly material, it will not pollute the water as well as the environment. 2、Strong Filtration Capacity: Replacing and cleaning filter sponges regularly can improve water quality and provide a better environment for the pool. The sponge cartridge is highly filtered and protects against algae and other organisms. 3、Convenient Installation: The filter is easy to install and replace, simply remove old parts and put the new one in its place, convenient for daily maintenance. 4、Complete Accessories: This pool filter replacement set contains 5 sponge cartridges. Durable and practical, is an essential sponge accessory for swimming pool cleaning. 5、Cost Saving: Replacing paper canisters is part of routine pool maintenance, and it can be costly to replace them regularly. These washable and reusable foam filters will reduce your costs. 5 x Pool Filter Sponge Cartridge Item Type: Pool Filter Sponge CartridgeMaterial: PU spongeColor: White