Filter replacement set for The Purrfect Water Fountain by IntelliLeash PURRoducts. Includes 5-layer filter and sponge filter.  

• A patent-pending 5-layer, Two Month filter for ultimate water filtration. It contains 10x more filter material than standard filters.
• Our cat water fountain filter lasts up to 8x longer than standard filters and only needs to be changed every 2 months.