Item Type: Pool Filter Cartridge Sponge_x005F_x000D_Material: Sponge_x005F_x000D_Gross Weight: Approx. 62g/2. 2oz_x005F_x000D_Category: Filter Cotton, Filter_x005F_x000D_Height: 8cm / 3. 1in, Inner Diameter 5. 2cm / 2. 0in_x005F_x000D_Use: Pool Cleaning 1Premium Material: Pool filter cartridge sponge is made of premium sponge material, which is very environmental and will not pollute the water or the environment. Does not break easily. 2Reusable: Replacement filter sponge has excellent elasticity and ductility. Can be reused, long service life, effectively reduce pool costs. 3Washable: Filter pump cartridge sponge can be cleaned with a warm soapy water mixture and then rinsed off with water. 4Effective Filtration: Sponge filter replacement foam can help clean particles and debris, filter a variety of impurities, hair, sand, dust, leaves, to keep the water clean. 5Application: Sponge filter replacement foam is 3. 1in high and 2. 0in inner diameter, suitable for spas, swimming pools, bathrooms, fish tanks and other places.