- High-Quality Material: Made from premium sponge, this filter is strong, durable, and offers excellent flexibility and high load capacity for long-lasting use. - Optimal Size: Measuring 10.8 cm in length, with an inner diameter of 4 cm and an outer diameter of 7.8 cm, this filter effectively captures impurities, ensuring clean water. - User-Friendly Design: The sponge is easy to clean and replace, providing continuous filtration for approximately 2 months. Each package includes 4 sponges for your convenience. - Reusable and Cost-Effective: Designed for high performance, this filter has a longer lifespan than standard ink cartridges and can be reused multiple times after cleaning. Practical Applications: 1. Swimming Pools: Keep your pool water crystal clear by filtering out debris and contaminants effectively, ensuring a pleasant swimming experience. 2. Aquariums: Maintain the health of your aquatic life by using this filter to remove waste and impurities, promoting a clean and safe environment. 3. Hot Tubs and Spas: Enhance your relaxation experience by ensuring your hot tub water remains clean and inviting, free from unwanted particles. Choose this sponge filter for reliable performance and superior filtration, making it an essential addition to your cleaning routine.