Bests & Worsts Reviews from Amazon

I purchased these masks because Amazon's product info says that they have an FDA Emergency Use Authorization. No, THEY DON'T. EUA's for 60+ Chinese manufacturers, including the manufacturer of these masks, were withdrawn by the FDA on May 7 of this year with the statement, "These respirator models had been on the list of authorized respirators in Appendix A but no longer meet the EUA eligibility criteria and thus are no longer authorized". There were widely reported severe quality problems with Chinese KN95 masks and these authorization cancellations likely reflect those problems. I am returning the purchase.