Capacity (volume) - .42 gallon. The vacuum that doesn't lose suction - 36 Dyson Cinetic tips separate the microscopic dust that clogs other vacuums No dirty filters to wash or replace - dust separation in vacuums containing Dyson Cinetic science is so efficient that, unlike with other vacuums, there's no need to wash or replace a filter. And with no bags to buy, there are no Hidden costs Self-rights when toppled - other vacuums fall down and stay down. Only Dyson big Ball canister vacuums pick themselves up HYGIENIC dirt ejector - Drives Out trapped dust and debris as you empty. No need to touch the dirt. Check machine for blockages, if the machine does not perform well Carbon fiber turbine head - carbon fiber filaments pick up Fine dust. Stiff nylon bristles remove ground-in dirt. The articulating handle and wand rotates in three directions allowing 360 degree articulation for greater control. And with a total reach of 35 feet you can clean here, there and everywhere