This everlasting vacuum cleaner bag is a dream come true... just think how much money you can save! Standard shape fits all vacuum cleaners. Just detach the cardboard panel from a used dust bag and attach it to the adhesive panel on the everlasting dust bag. When full, just unzip and empty into the dustbin. Your everlasting dust bag is ready to re-use again and again. Machine washable. Remove the self-adhesive panel before washing.