I was hopeful I would like the masks. However, they would not stay on my face. Tried several ways to adjust. I really wanted the KN94 to work well. I’d rather buy Korean masks then the supplier I have been using (they make a kn95 mask). Anyway, the price was good but the fit was not. So, Im stuck with some unused masks. They will have to go to ‘friends’ that drop by without masks. Anyway, ordered more of the KN95s from a different supplier.
I will check back once Im ready to order again.