The Right Fit Sand and Silt Debris Bag, 2 Pack comes with two replacement fine mesh filtration bags for the Polaris 280 Pressure Side Pool Cleaner. The Right Fit Sand/Silt Bag features tightly woven mesh fabric for ultra-fine debris removal, including sand, silt, and dust that is usually missed by standard debris bags. Filtering down to 100-125 microns, this bag attaches easily to the Polaris 280 and can be hosed down for cleaning.