AONBOY Cat Water Fountain with 6 Filters（grey）Quad Filtration SystemThe cat fountain is made of high density cotton, coconut shell, activated carbon and ion exchange resin. It can filter out the impurities, remove the peculiar smell, soften the water quality, and improve the taste. You can provide your pet with fresher and cleaner water to prevent it from getting sick. 2L Large CapacityThe 2L cat fountain is very suitable for small to medium sized pets, without the need for frequent refilling of