These dust filter bags S 67 AirSpace® from Swirl have an extra filter chamber, which pre-filters dirt and dust and ensures a better distribution of dust in the bag. Thus, the highest suction power of the vacuum cleaner remains until the bag is full received and does not fall the same as with conventional anthers. The bag with AirSpace® technology are additionally provided in the outer wall of the bag with an anti-allergen filter layer. This holds also problematic, allergic reactions causing particulate matter, such as pollen, mold spores and dust mite feces securely in the bag. The pack contains four vacuum cleaner bag.