Review on Highly Efficient KN95 Mask: ≥95% Protection Against PM2.5 by Daniel Warren

mask begins to shed external lint within hours of wear. This is really obvious because the masks are brightly colored. At the top of the mask along the nose and sides I noticed it was coming loose. This happens within a few hours after removal from the plastic case and in the case of multicolored masks. I have never had such a KN95 hood. I would not buy these.