What can I say? Perfect filter replacement for my Shark Nav Dlx. The filters themselves even come with a little fabric handle that makes it easier to remove the filters from the vacuum cleaner. Now don't give the impression that these filters are a permanent replacement for your vacuum cleaner. Even if you are in the third-party filter market, what happened to your original filters will eventually happen to them: A) they get too old, deformed, dirty and smelly to use, or B) they get thinner (if you cut your filters) Filters are the proverbial "blades" of the razor and will need to be replaced throughout the life of your vacuum cleaner. This product is the right replacement for the right money!