3M 8210 N95 General Use Respirator Face Mask is a premium quality respirator face mask that is capable of blocking all non-oil particle matter down to 0.03 micron. Due to its cool flow exhalation valve, it is a very comfortable and effective face mask. The mask has got lightweight construction and cooling exhalation vent that makes it a good choice for all-day work. It covers the mouth and nose and does not leave the gap between mask and face.