Fits perfectly on Polaris 280 and 480 robotic pool cleaners with the same specifications as the Polaris K13 net Zipper that lasts longer than Velcro and won't clog. Large-capacity silt bag with reinforced seams and ultra-fine mesh to capture even the smallest debris. Specifically shaped net to prevent debris from falling back when the cleaner is stopped. Hose hook and loop attachment for easy passage of debris into the filter. THE adaptable bag for Polaris 280 robotic pool cleaners The adaptable silt bag allows you to replace your original bag. Carefully assembled, it will offer you optimal performance and longevity. Fine mesh Polaris bagUltra fine mesh Very tight mesh to capture the finest particles Zipper Polaris bagQuality zipper Plastic zipper and rust-proof metal Higher capacity than the original to capture more debris and empty the bag less often Careful stitching and reinforced edges for greater longevity Polaris bag ring Check your bag ring Please check the shape of your