AirSpace® Technology for highest suction power...\nThese vacuum cleaner bags have an extra filter chamber, which pre-filters dirt and dust and distributes the dust better in the bag. This means you maintain the highest suction power of your vacuum cleaner until the bag is full, performance does not diminish as it does with conventional bags.\n\nSwirl® AirSpace® vacuum filter bags...\n...have round corners.\n\nFor you this means: the bag fits perfectly in your vacuum cleaner - nothing can go wrong.\n\nHygienic Seal for Convenient, Clean Disposal\nAll sealed up. Every AirSpace® vacuum cleaner bag has a well thought out closure system, it keeps everything to itself and will never again stir up the dust.