[WATER FOUNTAIN FILTERS]:Set includes 24-pack of high-quality pet fountain replacement filters and 48-pack of replacement filter sponges. [PERFECT COMPATIBILITY]: This replacement filter is only compatible with 67oz/2L automatic pet water fountain cat water fountain cat water fountain [MULTIPLE FILTRATION4]: The four-layer filtration system composed of shells, ion exchange resin, coconut shell activated carbon and cotton can capture hair and debris, remove odors, heavy metals and odorous water, purifying every drop of water for your pets [EASY TO REPLACE]: The filter and sponge of the pet water dispenser are easy to remove and install. When replacing, please pay attention to the correct direction of filter Elements replacement. Please refer to our picture details for details. It is recommended to replace the water filter and sponge every 3-4 weeks to properly maintain your fountain. If you have multiple pets, change them frequently [WARM TIPS]: Before replacing the filter, please soak the filter in clean water for 15-20 minutes, and then rinse the filter thoroughly with running water to keep the water clean and fresh. Material: non-woven fabric, ABS colour: White Package Contents: 24 x Filter Elements 48 x Filter Cotton