Are those straps the only difference between the GN HyClean and GN "Air Clean"?
And how come you can almost never find these on sale?
Several answers: The AirClean Bags are just released in some areas so some dealers might not have yet ordered them and other stores might just wish to deplete the now old stock. The AirClean Bags DO have strips in them but they are wider, made from a softer material and attached on the bottom... not the top like the HyClean. The AirClean Bags "SEEM to ME" to have a slightly larger and softer rubber rim around the opening.