These are great true Y-shaped vacuum bags for true HEPA cleaning without the smell of a dirty vacuum. What I like best is that the two bag order ships directly from Amazon Prime and serves as a nice soft pack for our other orders. We have dogs that we like to spend a lot of time with in our living room, we just don't like pet hair or smells on anything. We recently bought a new Hoover wind tunnel vacuum that uses these bags, as did our 12 year old Hoover wind tunnel that still works great in the showroom garage. Activated charcoal is a nice addition to an already great cloth bag. Five stars.