Material and durability PU foam construction is washable and reusable for a long time, providing a reliable filtration element for pool filters. Function and performance Helps clean and filter pool water, supporting improved water clarity and active filtration in routine pool maintenance. Replacement part Serves as a replacement part to and extend the life of the pool filter by providing a readytouse sponge component. Ease of use Lightweight and easy to install on the filter without tools, enabling quick setup and minimal downtime. Use scenarios Home pool maintenance: worn or dirty filter sponge during routine maintenance to keep water clean and clear. Filter and replacement: use as a spare part to quickly restore pool filtration when needed. Seasonal pool care: suitable for ongoing filtration needs in seasonal pool use, supporting consistent water quality without complex setup.