[Compatibility]: Cat Water Fountain Filters are compatible with Ultra Silent Cat Fountain 67oz/2L with LED Night Light-color classification: blue, clear, green, gray and orange; Please check the size and model carefully before purchasing; [Multi-Filtration System]: this filter is composed of double-density filter, cation exchange resin and coconut shell activated carbon. high-quality materials, every drop of water is fresh and living water, so that your pets love to drink water; [Active Filtration]: our filter replacement stops hair and debris, remove heavy metal elements, so that your pet's drinking water is more than clean, improve the softening of water quality, and effectively prevent urinary tract diseases in pets. Make your pet's life happier; [Friendly Reminder]: Please soak the filter in water for 5 minutes and rinse it thoroughly under running water before use. Change the filter every 2-4 weeks and clean the water pump once a week to the clean of drinking water; [What You Will Get]: These pet water filter replacements contain 8 carbon replacement filters and 8 pre-filter sponges; Colour:white+black Material:Non-woven fabric, carbon bag, resin Package Contents: 8 x Filter Elements 8 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.