Features: 100% brand new and high quality The water dispenser filter is made of high-quality activated carbon and pure cotton material, which is durable and reusable. The water dispenser filter filters hair and residues, removes odors, softens the water, and is easy to disassemble and clean. It is an essential accessory for pet water dispensers. Own it and provide a healthy environment for the pets you love. It is recommended to replace it every two months to keep the water fresh and clean. It depends on the number of pets using the fountain. Allowing more pets to use the fountain will increase the saliva and debris in the water, so the filter needs to be replaced more frequently. In order to prevent the carbon chips from falling off, please rinse the filter thoroughly with running water before putting it in the filter. Package Includes: 4 x Replacement Filters Specifications: Material:Filter Cotton Color:White Size: Approx. 13x11 cm/5.12x4.33 inches note: 1.Please allow 0-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.Other parts are not included. Thanks for your understanding.