Premium Quality Pool Robot Bag: These pool robot cleaner bags are made of durable nylon with reinforced stitching and premium zippers for maximum durability. The materials and weave are identical to those of the Polaris 280/480 bags, allowing them to hold all types of debris such as leaves, small twigs, sand and silt without tearing at the bottom of the pool. Easy to Use: The extra-large zipper opening makes it easy to empty and clean debris in the filter bag. The hook and loop fasteners can be removed in seconds for quick and easy cleaning. Perfect Fit: This universal filter bag features heavy-duty hook and loop fasteners designed to snap securely onto the pipe cleaner and snap tightly at the top. A safe and secure closure provides total reliability. Optimal Compatibility: Our cleaning bags work perfectly with Polaris 280 and 480 all-purpose bags (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