[COMPATIBILITY]: This replacement filters are compatible with for Lite Pet Water Fountain 2.5 L Drinking Fountain for Cats and and for Premium Drinking Fountain 2.5L [Clean and Water]: The three-layer filtering system formed by coconut activated carbon and cotton, which can capture hair and debris, remove odor, heavy metals and odors in water, and purify every drop of water for your pet [Friendly Reminder]: Please rinse thoroughly under running water and soak the filter in water for 15 minutes before use. Please pay attention to the correct direction of the filter replacement when replacing [Replace The Filter Regularly]: Please replace the filter once in 4 weeks in summer and once in 4-6 weeks in winter to clean drinking water. More frequent changes if more than one pet is using the water fountain<br><br>Filters Quantity:6PCS Colour:White & Black Material:carbon fiber<br><br>Package Contents: 6 * Replacement Filters 3 * Cylindrical Sponge 3 * Rectangular Sponge 3 * Circular Sponge<br><br>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.