Not anti-fog, but you will breathe better/UPDATE: replaced with much worse [SEP] I just reordered the same exact masks, but they sent me a totally different brand.  The new brand is called "FRYLR" the old brand (the one in the photo of a working mask) was "TEMI".  TEMI masks are great.  FRYLR are simply  awful.  The first one on the top was already broken in the box.  None of them look like they're going to hold up, even the ones that aren't broke.  They're badly put together and not stuck on properly.<br /><br />Since Amazon doesn't allow you to choose who you're getting them from, or tell you who you got them from last, it's all about luck when you order.  50/50 you get the good TEMI masks or the crappy unusuable FRYLR masks.  It's the same purchase button.  Either that or they replaced the good masks with bad ones.  The "TEMI" mask is the one in the photo that contains a face.<br /><br />If you're the gambling sort, here's the original 5 star reviews over the "TEMI":<br />TEMI<br />Positives:<br />1. You can breathe! Unlike with every cloth mask out there.  It's still uncomfortable because you're still re-breathing your own exhale, but you won't pass out. So if you have health conditions, this type of mask is probably the best option you'll find.<br />2. You can see through it, allowing lipreading and ability to see a smile and so forth.<br />3. Comfortable on the ears<br />4. Keeps you from touching your face, which is part of the reason cloth and surgical masks are a bad idea.<br /><br />Negatives:<br />1. Chin indent doesn't go away for a while and can irritate.<br />2. Touches the average sized nose.<br />3. It does fog up, but the fog disappears if the weather's not cold, so "fog resistant" might be a better description.<br /><br />Wore this to the bus and the post office, and was allowed to ride and others seemed fine with it.  It's an excellent way to go where you need to without being denied the ability to get necessities done, yet still breathe.<br /><br />It comes in a pack of ten.