EXCLUSIVE MULTIPLE -- Authenticated material-high sixfold activated carbon in the catit flower fountain filter / Advanced specialized cotton cover / Non-toxic plastic tray design for catit flower fountain filter inlaid,place steadily. IMPROVE HEALTH -- Removes impurities,detergent,germ,chlorine,calcium and magnesium, prevent debris,hair and deodorization by these filter design. Drinking water quality will be fresh and enhanced by this cat fountain filters. DESIGN FOR -- Catit flower 3L fountain -- catit design senses -- catit stainless steel (Please replace the catit flower fountain filter per 2-4 weeks.) LASTING PACK -- 8 pack to satisfying with your months of demand by catit flower fountain filter for cat fountain. (diameter 5.5”/14cm;height 0.5”/1.3cm) USAGE : Please rinse the catit flower fountain filter thoroughly before use. / Please turn the cat fountain filter cotton side up and turn the tray side down.