DemeTECH ASTM Level 3 Masks, Pack of 50

I've been using these masks for a while and they're very good. They're comfortable to wear even for many hours, they don't hurt my ears, they don't smell, and they provide a reasonable amount of protection (as far as the reduction of odors I can detect and how tightly they fit on my face). While they're not N95 masks (something to keep in mind if that's the protection level you want/need), they're certainly useful in reducing the amount of airborne particles you inhale and, when sick, you exhale. I find them perfect for travel, shopping, a visit to the doctor's office and whenever you want to protect yourself from whatever's floating in the air around you. The reason I'm only giving them 3 stars is that Demetech no longer individually wraps these masks, which makes them less sanitary, less convenient to carry around, and less durable (since oxygen degrades everything and they can potentially become contaminated). This is especially an issue if you use them infrequently and the 50 pack will be sitting somewhere in your house for a while. I tried to minimize this issue by dividing them into packs of 5, and then storing them in an airtight ziploc bags. In the future, I'll probably no longer buy this particular brand as I want individually wrapped masks.