Hoover Elite Rewind Bagless Upright Vacuum, UH71012 Multi-Stage Cyclonic Technology: cleans the air moving through the filter for no loss of suction Fabulous Filtration: multi-stage cyclonic filtration system, rinsable filter and a high-quality filter made with HEPA media. HEPA media traps 99.97 percent of dirt, dust and pollens down to 0.3 microns Bottom Release Dirt Cup: lets you see what you've picked up, when it's time to empty it out, and simplifies dirt disposal Performance Check Indicator: remains green during optimal performance 3 Position Carpet Height Adjustment: adjust as needed to clean all flooring types efficiently