I received the mask on Monday like I would have hoped. I tried it out yesterday while I was at work since I have to be in the store's coolers and freezer. I ended up buying the Large since I was reading other buyers reviews and had a similar measurements as some. So I tried out the mask and must say it works out pretty well! I can breath pretty easily while wearing the mask and my glasses don't fog up which is a plus! Looks like I shall be able to get more work done in the cooler/freezer. I'd recommend this mask to people for sure.