describe Perfect for the robot cleaners of Polaris pools 280 and 480 with the same specifications as the Polaris K13 net. Over time, zippers last longer than stripes and do not clog. Large capacity silt bag with reinforced stitching and ultra-fine mesh to capture even the smallest waste. The specific forms of the mesh prevent debris from falling when the robot vacuum cleaner is stopped. The self-gripping attachment on the pipe facilitates the passage of debris through the filter. Adaptation pack for Polaris 280 pool robots The adjustable stringer bag allows you to replace your bag of origin. Assembled with care, the will offer you the best performance and longevity. Polaris Bag in Fine Knit Superfine Knit Very tight mesh to capture the finest particles Zipper for Polaris bag Plastic and metal zippers with anti-rust treatment Capacity greater than the original capacity to capture more debris and reduce emptying of the bag Carefully reinforced seams and edges to longer life north star