Compatibility: Works perfectly with Polaris 280 and 480 Multi-Purpose Bags, Part K13 and K16. Hook and loop fasteners are designed to fit snugly around the brush and seal the top tightly. (Please confirm your Polaris model before purchasing) These nylon mesh pool cleaning bags with heavy duty stitching and mesh fabric are perfect for picking up debris or small leaves and twigs without tearing them from the bottom of the pool. The extra zipper opening makes this pool mesh bag 3 times easier to empty and clean debris from the filter bag. It far surpasses the velcro type, which is a great asset for you Easy to Use: Our versatile filter bag is easy to install, remove and clean. The improved clips fit perfectly on the vacuum cleaner and the user and can be installed in seconds. The multi-use filter bag is open on 2 sides, making it very easy to clean. This is not an original part, but an aftermarket part. Polaris does not make or sell parts. equal or better than the original performance,