➤COMPATIBILITY : only compatible with Yivinow Pet Fountain70oz/2L. Please check the size carefully before purchasing. ➤MULTI-FILTRATION SYSTEM : this filter is composed of Pre-filter Cotton,Lon Exchange Resin and Activated Carbon Filter 8D Filter Cotton,every drop of water is fresh and living water, so that your pets love to drink water ➤ACTIVE FILTRATION: this 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 ➤KEEPING HEALTH: helps pet to increase water consumption ➤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 weeks and clean the water pump every 3 days to ensure the clean of drinking water