BeeSure BE2580 Pure Vibe Face Mask - 50 Pack Disposable 3-Ply White Masks for Daily Protection & Comfort - Ideal for Work, Travel, School & Public Safety

Several reviews of these masks complain that they gap out on the sides/cheeks. My family complained about the same thing. I agreed with them until I scouted around for some info about it (since these were highly recommended by my doctor's nurse).The trick is to pinch the bottom flexible wire to get a good fit. On my face, for example, I pinch that bottom wire so it sticks out about a half inch. That draws the sides in and the masks fit perfectly. If you don't know about this, you might think all you need to do is pull that wire down below your chin. That's not enough for most people.These masks are very comfortable to wear for a long period of time. Much better than any of the cloth masks I have. Not uncomfortable over nose and mouth, and the ear loops don't become annoying after a while. And with the pinch trick on the bottom wire, they stay pretty snug with just an occasional pinch adjustment.Some wearer might not notice the little plastic flap on the top edge. You're supposed to flip that up to prevent your glasses getting foggy. I don't wear glasses, but I've heard good things about it from people who do. I guess it does the job. I flip that little flap up anyhow because I feel like I get a better seal on the top edge.