Meanwhile I became Dauerbestellerin of the article and can over my initial attempt to replace vacuum cleaner bags by "cheap products", only shaking his head. Because nothing to tear, they are easy to change and "foolproof" in handling. The (also here at Amazon) bought cheap version I have completely disposed of - I'd rather spend some more money, but it is also true that quality. Maybe this review preserves all those facing a disappointment, the first "Save ans think" as I then :-)