Package includes: you will receive sufficient quantity of sponge filters for cat drinking fountains, sufficient quantity can meet your use and replacement needs, providing clean drinking water for your pets. Size information: the pet fountain foam filter is specially designed to be compatible with the 84 oz/ 2.5 liter ; Please pay attention to size before buying to prevent wrong buying. Quality material: the cat fountain filter is made of sponge, offers nice filtration to the pet water fountain, brings clean and water to your pets, making your pets be willing to drink . Filter impurities: the cat drinking fountain sponge filter can filter impurities well, capture pet's hair and debris, that every drop of water is healthy, make the water cleaner and fresher, and extend the service life of the pump. Warm tips: the cat fountain sponge filter is not suitable for repeated use; Since the filtered impurities will remain on the sponge, it is more suitable to replace the sponge filter every 2-3 weeks. Colour: black Material: sponge Size: about 6.5x3x3cm Package Contents: 8 * Sponge Filter for Cat Fountain Replacement Only the above package content, other products are not included. Note: Light 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.