Dyson Cinetic Big Ball Multifloor Upright Vacuum, Silver - Corded Dyson Cinetic science - 35 high frequency Oscillating Dyson Cinetic tips capture the microscopic dust that clogs other vacuums Better overall performance than any other vacuum, with HEPA filtration The only vacuum with zero filter maintenance. 200 sideway slams into steel blocks. 362 miles of carpet cleaning No dirty filters to wash - the only vacuum with no filters to wash or replace, so there's no loss of suction Self-adjusting cleaner head - active base plate automatically raises and lowers to seal in suction across carpets and hard floors