| Customer Reviews: Average Rating:  Rating : - Does the yob. I've a small face. It's hard to find masks that fit correctly. Because of the elastic straps, these do OK. I use them in a clinical (nursing) setting. W/O an exhaust valve, they are very uncomfortable after 30mins. They do the job. All masks like this are uncomfortable w/o exhaust valves. I'll buy more when these run out. + See Full Customer Review |  |