I live in Houston and have learned to deal with allergies.  Being an outdoors guy, I like to do my own yard work.  This wraps help to prevent an allergy attack by filtering some of the pollens kicked up by the lawnmower and weed eater.  I find that the best way to wear this wrap is ninja style!  It creates a double tight fit over my nose and mouth.  It is a great alternative to the white paper filters!