Dsiuapointing Functionality for Anti-Fogging
I specifically bought these for the anit-fogging feature, and I am sorely disappointed with them for this reason.  This only works if you position the mask in exactly the right spot in exactlly the right way.  Move it by a milimeter, and my glasses fog right up.  Move your head, even breathing, causes the mask to move ever so slightly which is enough to fog my glasses.<br /><br />On the other hand, they are a very comfortable mask to wear and in that regard they are very good.
Rating: 2 stars