PACKAGE INCLUDES: The package includes 24 packs of cat fountain filter replacements and 24 sponges. Each filter and sponge is individually wrapped and sealed for convenient daily storage and use. Depending on your pet's drinking habits and the number of pets, we recommend cleaning the pet fountain filter once a week and replacing it 1 to 2 times per month to maintain fresh and clean water. PERFECT MATCH: The cat fountain filter measures 2.99 x 1.69 inches, and the sponge measures 3.1 x 1.1 inches. This size is compatible with most 67oz/2L, 101oz/3L, 108oz/3.2L, and 135oz/4.0L stainless steel pet fountains available on the market. Please verify compatibility with your specific cat fountain before purchase. EASY TO USE: These pet fountain filter replacements are simple to install and remove, saving time and effort. Soak both the filter and sponge in water for at least 3 minutes to activate optimal filtration performance, then rinse thoroughly under running water. This helps extend the freshness of your cat's drinking water. TRIPLE FILTRATION SYSTEM: The cat water fountain filters are constructed with activated carbon, ion exchange resin, and non-woven fabric, creating a triple-layer filtration system. This combination effectively captures impurities such as pet hair and food particles, reduces odors, softens water, and enhances overall water taste and quality, supporting your pet's health. RELIABLE MATERIALS AND SERVICE: Made from safe, pet-friendly materials, these filter replacements are designed to support your pet’s well-being without compromising water safety. We are committed to customer satisfaction and provide reliable service to ensure a positive experience. Color: White & Black Material: Cotton cloth Package Contents: 24 x Filters, 24 x Sponges Note: The actual product may vary slightly in color due to lighting and screen display differences. Measurement tolerances are within +/- 1-3 cm. Only the items listed above are included; additional accessories are not part of this package.