Vacuums with fixed wheels can be awkward to steer. Dyson Ball™ vacuums turn on the spot, moving easily around obstacles and furniture. Key components, including the motor, are located inside the ball for a low centre of gravity and greater stability. Dyson Ball™ vacuums have cleaner heads and floor tools that have been engineered to optimum performance. And like all Dyson vacuums, they don't use bags to capture dust, so there's no loss of suction. Dyson cyclones capture more dust and dirt than any other. The latest Dyson Ball™ vacuums have Radial Root Cyclone™ technology, with remodelled airways to maximise suction power. DC38 and DC39 are cylinder vacuums with Ball™ technology. They turn on the spot, and a central steering mechanism provides greater control. Key components are housed within the ball, creating a low centre of gravity and increasing stability. DC39 is full-size, while DC38 is compact and lighter to pull across different floor surfaces than any other vacuum.