Color as shown Size: 30x25x5cm Weight: 200g 【Compatibility; Perfect】Compatible with Round Stainless Steel Cat Fountain and Dream Cat Fountain. 【Premium 8-Pack】Pack of 8 replacement drinking fountain filters, individually wrapped and sealed to maintain the high quality. 【Keep Your Pet Healthy】The cat waterer filter uses plastic as the bottom shell, which is made of a layer of cotton, activated carbon and resin.Ion Exchanger. They filter hair, heavy metals, improve the taste of water and allow your pets to drink clean, healthy water. 【Recommendation】 Before use, soak the cat water filter in water for 2 minutes and rinse thoroughly under running water. 【Replacement】Rinse the cat fountain filter with tap water every time you change the water in the fountain drinker and replace the pet fountain filter every 2 to 4 weeks depending on your pet’s drinking frequency and the number of pets that have the Use drinking fountain.