Perfect Combination: This cat water fountain filter is designed specifically for use with our 95oz/2.8L pet fountain. Please double-check your machine model before purchasing! Individually Wrapped Packs: individually wrapped and sealed to the highest quality. We recommend replacing the cat water fountain filter 1 to 2 times a month to maintain fresh, clean water (per your pet's drinking frequency and the total number of pets using the fountain). Optimal Filtration System: The cat fountain filter replacement features a comprehensive 3-fold filtration system consisting of activated carbon, ion exchange resin, and non-woven fabric. Together, these elements effectively filter out impurities (such as hair and heavy metals) while improving water taste and quality: helping to keep your pets healthy and hydrated by providing them with clean, fresh water throughout the day. Easy-to-Use Functionality: For optimal water quality, please soak the cat water fountain and sponge filters in water for at least 2 minutes and then rinse thoroughly with running water before placing them in the fountain. Our cat water fountain filters are made from environmentally friendly materials and are non-/harmless to your pet's health: meaning you can use them with confidence! [Friendly Reminder]: Please soak the filter in water for 5 minutes and rinse it thoroughly under running water before use. Change the filter every 2-4 weeks and clean the water pump once a week to the clean of drinking water; Material: carbon fiber colour: White+black Package Contents: 16 x Filter Elements 16 x Filter Cotton 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.