I was lucky, I still have an old bag from buying a vacuum cleaner (it is already 7 years old) and there is an opportunity to compare them. To the touch, the old bag is denser (although this is of course subjective), but more nylon threads are felt. If memory serves, two felt filters for the engine compartment were put in the old kits - now one felt and one nylon (long), although I could be wrong. Unfortunately, I can’t upload a comparison photo, since the old one was so heavily polluted that I immediately threw it away (I forgot about the vacuum cleaner for two or more years, the bag and filter survived). There is a photo only from the old box (by the way, the old box turned out to be more convenient than the new one). But the size has changed: the old bag is twice the size of the new one. I don’t know how much it will fill up, but you can see the dimensions in the photo below. And as they wrote in other comments, the inscription "not for sale in the United States and Canada" appeared on the box, which is not clear. There are non-original bags on the market, I used them - there are no complaints (but there are no filters in the kit).
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