https://www.yahoo.com/news/cloth-mas...224321477.html
but the best mask does not help when you pull it out from your -dirty - coat pocket. have it hanging on the cars rear view mirror. seen in many cars in town. or wear it on your arm like a -bracelet- all day long. and just put it on out of fear to get a fine for not wearing one. Or not let into a shop or restaurant. Or bank or any other public building or transport. Where mask are a - must wear -. I think to wear a CLEAN mask is more important than what type of mask one is wearing?