The reusable bag is made of heavy duty denim with a sturdy metal lip to maintain its shape. The lip is outlined in rubber for a snug fit inside the vacuum. By purchasing the reusable cloth bag, you will never need to buy another paper bag. In the long run, the cloth bag is a better value and it works just as well as the paper bags. When the dust bag becomes particularly soiled, hand wash it in a mild detergent. Hang the bag up to dry. Allow it to completely dry before placing the bag back inside the vacuum.