Best filtration performance: Use our water dispenser filter to that your pet's drinking water is always clean and fresh. These filters are designed to be compatible with all kinds of 2.5L drinking fountains, providing excellent filtration function to remove impurities and maintain the clarity of water. Long-lasting hydration: Each filter provides long-lasting hydration support to that your cat can get clean water, reduce the frequency of replacement, and maintain the best fountain performance. Easy to install: these filters are easy to install and do not need any tools, which makes the maintenance of your pet's water dispenser easy. Environmentally-friendly materials: Made of environmentally-friendly materials, these filters are safe for your pets and aim to minimize the environmental impact. Colour:As Shown Material:Non-woven fabrics Package Contents: 9 x Pet filter element 3 x Y type sponge 3 x round sponge 3 x square sponge Only the above package content, other products 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.