Some vacuums only use suction on one side of the base, which can leave dirt behind. Exclusive Bissell suction channel technology creates a direct suction path, allowing the vacuum to pick up more, edge-to-edge. The lightweight design and swivel steering make it easy to maneuver and the brush roll on/off switch takes cleaning from carpet to hard floors simply. Let this pet vacuum power through pet hair with the pet turbo eraser tool and tackle stairs with the extended reach hose. They're the features you need for a clean you love. Tested per ice 60312-1 with multiple dust loadings, results within accepted tolerance of 5percent.