Multi-layer filtration system ensures pet health: high-density filtration of fine particles ensures the purity and health of your pet's drinking water. Pet healthy design: Make sure filter replacement is hassle-free and keep your pet fountain running. Recommended replacement cycle: In order to maintain the health of your pet, we recommend replacing the filter every two weeks. Changing the filter regularly can effectively extend the service life of the fountain, while ensuring that the water quality is always fresh. Preparation before use: Soak the new filter for 5 minutes before use, followed by a thorough rinse for 5 seconds to remove any residue that may be present in the filter and the water quality is safe for pets to drink. Color: Material: plastic Package Contents: 2 x Filter Element 6 x Filter Cotton 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.