almost perfect
I like these masks because they have a KN-95 filter as the inside layer, so one need not choose to wear a KN-95 disposable mask. Unfortunately, because these are cloth masks and they do not indicate the strength of the enclosed filter on the outside of the masks, others may think they do not have the filter at all. Also, these masks (medium size) are a little loose on the sides; that is, they do not cling to my cheeks. For these two reasons, I have recently switched to wearing the disposable KN-95 masks. It's too bad, since I like the colors this brand has, and they are quite comfortable.
Rating: 4 stars