- High-quality material: our cat fountain filter is made of polyester fleece and includes activated carbon filtration and natural resin filtration. Multiple filters in one can effectively improve water quality and ensure safe drinking water for cats. - Packaging details: you will receive 20 packed filters, including 10 filter cartridges measuring 11.4 x 4.5 x 1 cm and 10 filter sponges measuring 3.6 x 2.9 x 0.8 cm. Please make sure the size is suitable for your cat water dispenser before use. - Easy to use: rinse the filter for the cat fountain before use; pre-set it until it is completely soaked. With the raised side up and the flat side down, you can use it easily and successfully. - Intelligent design: filter for cat fountain has an advanced design, a powerful filter function and an effectiveness of up to 300 hours. Cats have a healthy water source that is protected from hair and impurities and is effectively filtered. - Use scenarios: - Use in a standard cat fountain to maintain clean drinking water for daily use. - Use in multi-cat households to ensure filtered water for all cats. - Ideal for homes with long-haired cats to help reduce hair and impurity buildup in the fountain.