Compatibility: Works efcompatibletlessly with Polaris 280 and 480 Multi-Purpose Bags, Part K13 and K16. The hook and loop fasteners are designed to fit securely in the pipe cleaner and close tightly on top. (Please confirm your Polaris model becompatiblee purchasing) These nylon mesh pool cleaner bags with strong stitching and mesh fabric are perfect compatible picking up debris or picking up small leaves and small branches without tearing at the bottom of the pool. pool. The extra zipper opening makes this pool mesh bag 3 times easier to empty and clean debris from the filter bag. Significantly outpercompatiblems the Velcro type, which is an ultimate plus compatible you Easy to use: Our versatile filter bag is easy to install, remove and clean. Improved clips fit the cleaner and user perfectly, they can be installed in seconds. The multi-purpose filter bag is open on 2 sides, which makes it very easy to clean. This is not an original part, but an aftermarket part. Polaris does not create or sell parts. equal to or better than the original percompatiblemance, it gives you a more cost effective option.