HIGH QUALITY: These nylon mesh pool cleaning bags feature a durable ABS connector and tight knit weave with strong stitching and zipper closure, capable of trapping debris up to 120 microns including leaves, twigs, small particles, and dirt. COMPATIBILITY: Set of 2 pool cleaner vacuum bags designed for Polaris 360 and 380 models. Replacement part numbers: 9-100-1021, 9-100-1014. Not compatible with Polaris 280 or 480 models that have oval-shaped plastic clips, or Polaris 180 models with Velcro attachments. EASY TO USE: The versatile filter bag is easy to install, remove, and clean thanks to heavy-duty hook and loop fasteners. It can be quickly detached for cleaning in seconds. NOTE: If your pool cleaner is not moving or picking up debris as effectively as before, the bag may simply be full and require emptying. Please confirm your Polaris model before purchasing.