Pollution Masks: Which Are Best?
BY DR. RICHARD SAINT CYR, ON SEPTEMBER 13TH, 2010 From Dr. Richard St. Cyr’s Weibo Real World Testing I tried it around town for a bit, and the overall comfort is good. It definitely is less awkward-looking than the typical N95 with exhalation valves. I was pleasantly surprised with the seal and that my glasses […]
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