At that time I got myself the same filter along with my new vacuum cleaner "Siemens VS06G2410 vacuum cleaner". As I was packing me in the Swirl never sure how much there was now indoors. In this package are now 12 vacuum cleaner filter and 3 Micro filter (as described halt). For the price I thought it was fine. The filter hold already some and for those who want to save even more, can indeed empty the filter and use it again. Virtually maintenance is in the vacuum cleaner bag that you that you can "carry on" the input (which I do not know how it is with the others. Previously had one of those "endless filter").
The microfilter which participate in, are interconnected. This means that you have to cut the microfilter cope (3 sizes are fixed). Have added an image, how to recognize it and what models there are.
However, for the price and that it is the original filters for vacuum cleaners, I find the most appealing package! :-)