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 are going to hold up even the ones that are not broke they are badly put together and not stuck on properlysince amazon does not allow you to choose who you are getting them from or tell you who you got them from last it is all about luck when you order you get the good temi masks or the crappy unusuable frylr masks it is 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 faceif you are the gambling sort here is the original star reviews over the temi you can breathe unlike with every cloth mask out there it is still uncomfortable because you are still re breathing your own exhale but you will not pass out so if you have health conditions this type of mask is probably the best option you will find you can see through it allowing lipreading and ability to see a smile and so forth comfortable on the keeps you from touching your face which is part of the reason cloth and surgical masks are a bad ideanegatives chin indent does not go away for a while and can irritate touches the average sized nose it does fog up but the fog disappears if the weathers not cold so fog resistant might be a better descriptionwore this to the bus and the post office and was allowed to ride and others seemed fine with it it is an excellent way to go where you need to without being denied the ability to get necessities done yet still breatheit comes in a pack of ten