Top quality pool robot bag: These pool cleaner bags are made of heavy-duty nylon with reinforced stitching and premium zip closure for maximum durability. The materials and weave are identical to the Polaris 280/480 bags, allowing them to to contain all types of debris such as leaves, small twigs, sand and silt without tearing at the bottom of the pool. Easy to use: extra-wide zipper opening makes emptying easy and cleaning debris from the filter bag. Hook-and-loop fasteners can be removed in seconds for quick and easy cleaning. Perfect fit: This universal filter bag has extra sturdy hook-and-loop fasteners designed to securely snap onto the pipe cleaner and close firmly at the top. A safe and secure closure provides total reliability. Optimum compatibility: Our cleaning bags work perfectly with the Polaris 280 and 480 all-purpose saddlebags (parts K13 and K16). Please note that they are not compatible with Polaris 360 and 380 pool cleaner models. Super value of 2 polaris robot sock: Comes with 2 pool cleaner filter bags, you can change a bag and put a clean bag back, this way the vacuum cleaner is stopped for a few seconds and you always have a dry bag at hand.