With today's increasing health concerns regarding the rise of allergy and asthma sufferers, it's important to maintain a pollution-free environment in the home. The Sebo's filtration system ensures high filtration to remove dust, dirt, and allergy-causing particles without recirculating it into the living areas. This box of vacuum cleaner bags contains 8 Sebo Filter Box X-C-370 Bags . Attached to the green plastic collar is a vacuum bag plastic cover to prevent the dirt from escaping the bag when being thrown in the trash.