Hoover WindTunnel Multi-Cyclonic Canister, SH40050 WindTunnel Technology - three distinct air tunnels effectively lifts and removes dirt and debris, trapping it inside the cleaner instead of scattered back onto the floor The Multi-Stage Cyclonic Filtration system cleans the air moving through the filter to ensure no loss of suction, with all the power needed to get floors truly clean The fingertip controls offer comfortable access to the brush-roll switch which allows you to turn the rotating brush on when vacuuming carpet and flip it off to safely clean your hardwood or other bare floor surface For above the floor cleaning, the vacuum provides a 7 foot hose, a detachable telescopic wand, and on board tools The multi-stage cyclonic filtration system helps ensure no loss of suction and the filter is HEPA media which traps 99.97% of dirt, dust, and pollens down to 0.3 microns in size