Pollution Masks: Which Are Best? Consider Totobobo…

  Update April 2014: I recently published a review of three independent comparison tests of masks, which includes Totobobo. I’ve often written about how Beijingers may need a good filtration mask on the really bad days here, but it’s difficult to find good ones. I’ve usually recommended any official N95 mask, and I consider the 3M company … Continue reading Pollution Masks: Which Are Best? Consider Totobobo…