These are the best quality bag available for the Smart Choice Carpet Pro upright vacuum cleaners. Rather then using a paper bag, these are a high quality synthetic cloth material. The more efficient HEPA filtration bag will capture more dust particles in the bag, where the paper bags will allow the microscopic particles to escape through the pourus bag, then into the vacuums motor, and finally exhausting back into the air you breathe. Because the HEPA bags retain more of the dust, the vacuums motor is exposed to less dirt, making the motor last longer, and run cooler. These HEPA bags are over 75% more effective at capturing airborne allergens then standard paper bags. Highly recommended for homes with breathing issues such as asthma, as well as allergies. These bags are designed to fit ALL Carpet Pro upright models including; CPU-75, CPU-75T, CPU-85, CPU-85T, CPU-1, CPU-1T, CPU-2, and CPU-2T. They will also fit Riccar 2000, 4000 series, Simplicity 5000, 6000 series type A, as well as all Fuller Brush upright models. GoVacuum has conveniently bundled these bags together to save you money. Each package contains 6 bags, and there are 5 boxes included for a total of 30 bags. Generic bag made by Envirocare.