I just received these today in the mail. They are replacing Oreck brand HEPA bags I had been using. I installed one and immediately vacuumed the house. Like the Oreck bags, they seem to do the basic job without a dust cloud or odor.
The big red flag for me though was when I noticed where the maximum fill line is. It is halfway down the bag. Half the bag will be unused when you are supposed to change it. The Oreck bag is much higher near the top, meaning you get much more volume out of it. Perhaps it has to do with the fact that these are paper while the Oreck's are made of some kind of cloth or what feels to be a sturdier, more premium material. Maybe it can't handle the weight of the extra material inside it (my wife's theory).
The bottom line is, the money I saved buying these will likely be nullified by the severely decreased volume. This company needs to address this immediately. I would think people would sour on this product if they have to change it twice as frequently.