Cat Water Fountain Filters, 32 Pack Cat Fountain Filters, Cat Fountain Replacement Filters for 67oz/2L&108oz/3.2L Stainless Steel Cat Water Fountain, Pet Water Fountain Filters(16 Filters&16 Sponges)Natural Material The cat fountain filters are made of 100% cotton and superior quality husk. Compatible The cat water fountain filters are ompatible with most stainless steel cat water fountain. Please check whether it is compatible with your cat water fountains before purchasing to avoid purchasing errors. Multiple Filtration System The cat fountain filters of the carbon filters with triple filtration system of cotton layer, activated carbon and ion