With patented technology, Humanscale's ZŌN personal air purifier does what no other air purifier can do: surround the user in a bubble of air that's free of pollutants, dust and biological contaminants while boasting silent, breeze-free and ozone-free operation. A much-needed solution for improving indoor air quality, ZŌN removes more than 99 percent of airborne particles of all sizes for the cleanest possible air.