Compatibility: Works seamlessly with Polaris 280 and 480 multi-purpose bags (parts K13 and K16). Hook-and-loop fasteners are designed to fit snugly around the vacuum and close securely at the top. (Please confirm your Polaris model before purchasing.) These nylon mesh pool cleaner bags feature strong stitching and a mesh fabric, perfect for vacuuming debris or small leaves and twigs without tearing them from the pool floor. The added zipper opening makes emptying and cleaning the filter bag three times easier with this pool mesh bag. It's much more valuable than the hook-and-loop types and a valuable asset for you. EASY TO USE: Our versatile filter bags are easy to install, remove, and clean. The improved clip fits perfectly between the vacuum and user and installs in seconds. The multi-purpose filter bag has openings on both sides and is very easy to clean. This is not a genuine part, but a replacement part. Polaris does not manufacture or sell parts. Equal to or better performance