These Replacement Fleece Bags have been developed to perfectly fit Nilfisk Aero 20-01, Aero 20-01 Inox, Aero 20-21 Inox, Aero 20-11, Aero 20-21, Aero 25-11, Aero 25-21 range of vacuum cleaners. The bags are fitted with a polypropylene closure for an improved fit to the dust inlet pipe. They are unaffected by humidity, moisture or liquids. Keep floors clean at all times with these bags. The durable fleece material captures the dust and dirt, firmly holding it there. Supplied as a pack of 5.