Dyson DC40 Multifloor - Silver (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 6-month warranty The cyclones inside a Dyson vacuum cleaner generate centrifugal forces many thousands of times the force of gravity Dust, dirt and pet hair are flung out of the airflow and straight into the bin. No bag. No loss of suction Reconfigured air channels and improved flow efficiency reduce turbulence and preserve air pressure, so that the inner cyclones can extract more microscopic particles Self-adjusting head for different floor types