bought 5 masks for the price of 3 at an awesome deal on the site. The oxybreath pro mask mask was flexible and can be adjusted to every face type. Believe or not neither me nor my wife nor my kids had any fit or adjustment issues. I must say it brought a lot of mental peace and oxybreath pro mask satisfaction in my mind. Truly recommended for all. Therefore are facemasks effectual in preventing or reducing air pollution exposure? Their ability to confine exposure rides on the type of pollutantthe mask by itself and how it's utilized. Masks are assigned a security factor, that's that the percentage of a pollutant that the mask doesn't get rid of. A protection factor of 10 means that all 10% of these pollutant is pumped out from the mask, assuming that the mask fits tightly around the facearea. Research has indicated that exposure