The Swirl MicroPor Plus filter ensures maximum perceivable cleanliness. This filter layer not only captures regular household dust but also allergenic fine dust in the form of pollen, mold spores, mite droppings, and bacteria within the bag. For allergy sufferers, this means relief from allergenic fine dust in the indoor air. The Dirtlock dust closure ensures convenient and clean disposal. What good is the highest quality in vacuum cleaners and vacuum bags if the dust closure proves to be a weak point? Especially when changing the vacuum bag, fine dust can escape into the environment and potentially harm human health. The Dirtlock dust closure delivers on its promise, as its thoughtful closure mechanism ensures that dust stays where it belongs when disposing of the full vacuum bag. It's simply convenient and safely clean. The new development from Swirl is for the sake of the environment. Swirl vacuum bags with the Pro Nature seal are made from at least 40% recycled materials and renewable resources. This way, Swirl contributes to environmental protection and resource conservation. The Swirl AirSpace Technology ensures even dust distribution in the bag, resulting in a longer lifespan. This means the bag needs to be changed less frequently, generating less waste.