[Compatible]This cat water fountain filter is compatible with a of cat fountains, the specific compatible fountain style, please check the product image list, before buying please confirm whether it is compatible with your cat fountain to avoid purchasing errors. [Triple Filtration System]The carbon filter of the cat fountain helps to remove odor, soften water, and improve the taste and quality of your pet's drinking water. Meanwhile, the filter sponge captures pet hair, dirt, and food particles, providing your pet with pure and healthy water. [Material]Made of eco-friendly materials,the pet water fountain filters help the water quality and provide healthy and pure water to protect your pet's health. [Filter]The cat fountain filter helps purify the water and eliminate bad odors, while the pre-filter sponges blocks out any hair, dust or food debris. [Clean]Before use, soak and flush the cat water fountain filter with clean water,clean the filter every time you change the water of the cat fountain, and change the cat drinking fountain filter every 2-4 weeks. Color: white + black Material: Cotton Package Contents: 12 x filter elements 12 x filter cotton Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.