How it works: The foldable design increases the filter area, thickens the filter membrane and has a strong pollution absorption capacity. Package Contents: Filters impurities to reduce duo chlorine, giving you clean and fresh water. This is a necessary part for the inflated swimming pool in the home summer, replacing the old one Pool cleaning filter: The swimming pool filter is a practical choice to replace the old inflated swimming pool filter which is economical and efce, providing almost the same service as the original filter with a lower price. Compact size, easy to carry: The swimming pool filter is compact and lightweight, convenient to use with the pool inflated together, does not take plenty of storage space, perfect for travel or limited storage space. Field of application: the upgraded version of the FD2089 inflatable pool filter fits all MSPA models, with push and twist bayonet connection , which is a necessary part for the domestic summer inflated swimming pool, replacing the old one