Dyson Ball Allergy Upright Vacuum Strongest suction of any vacuum . The Dyson Ball upright vacuum cleaner has the strongest suction of any vacuum. Radial Root Cyclone technology. Dysons most advanced Radial Root Cyclone technology- Captures more dirt and microscopic dust. Self-adjusting cleaner head. Automatically adjust to seal in suction across carpets and hard floors. Whole Machine HEPA filtration. No other vacuum expels cleaner air. Certified asthma & allergy friendly. Engineered to remove allergens. Extra tools, engineered specifically for allergy sufferers, remove fine dust and allergens from difficult places.