[Compatible]The cat water fountain filter is compatible with 360 stainless steel cat fountain and cupcake ceramic pet drinking Fountain. [Package]The package contains 16 cat fountain replacement filters and 4 pre-filter sponges. [Filter]The carbon filter helps purify the water and bad odors, while the foam filter blocks out any hair, dust or food debris. [Material]Made of eco-friendly materials, the pet water fountain filters help the water quality and provide healthy and pure water to protect your pet's health. [Clean]Before use, soak and flush the filter with clean water,clean the filter every time you change the water of the pet fountain, and change the filter every 2-4 weeks. Product Benefits: Removes impurities Colour:White Material:Polyester Package Contents: 16 x Replacement Filters 4 x Filter Sponges 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.