Comfortable to use, with a modicum of security.
I bought two masks, (His and Hers, large and medium)  Two valves provide for easy exhalation and the porous fabric provides good fit and a reasonable and comfortable fit, with filtration of the incoming air through activated charcoal.  Limitations include limited methods of cleaning and the fact that exhaled air is not filtered; therefore others persons are not protected from your germs.
Rating: 4 stars