DescriptionThese are swimming pool filter cartridges, made of premium material, which are safe and durable, and help prevent the hair, residue from going into the sewer. Keep your pool water crystal clear and give your swimming pool pump its best performance with the filter cartridge.Features- Color: Blue.- Size: 10.20X9.00X3.00cm/4.01X3.54X1.18 inch.- Material: Sponge.- Made of heavy duty sponge for better filtration that can keep your pool or spa sparkling clean and clear day after day!- These above ground pool replacement filter cartridge is more washable and reusable than other pool filter, and will reduce your costs.- Compatible with swimming pool, fish tank, bathroom, and so on.- The filter sponge has good flexibility, high resilience, can be bent repeatedly without deformation and damage, durable.- For maximum efficiency, clean cartridges each week and replace at least once a month.Packing list: 2 x filter elements