The HooverTurbo Anniversary Edition Windtunnel Self Propelled Bagged Upright comes with the patented Windtunnel Technology to remove the hidden deep down dirt that other vacuums leave behind. The self-propelled feature gives you nearly effortless maneuverability in both forward and reverse motion, but Includes a manual override if needed. The non-maring wheels come with bearings which make it easier to push on carpets and safe to use on bare floors. The Allergen Filtration with Hepa Filter helps trap 100% of dust mites, ragweed, and common grass pollens. The Ergonomic D-grip gives you the confort needed when cleaning your carpet. The Powered Pet Hair Tool has Windtunnel Technology and rotating brushes to easily remove pet hair and dirt from stairs and upholstry. All this and a three year warranty on the motor and parts.