These bags look very high quality and cost less than Bissell Febreeze bags! Unlike Bissell paper bags, they are 100% fabric. You can get 20 in a pack instead of 3 and they'll probably last me a long time. I'm not sure if they're HEPA certified, but if they're not, they're probably pretty darn close to HEPA. Better filtration than Bissell bags, that's for sure.