It's ridiculous that mask standards are still subjective after all this time. These masks WILL NOT PROTECT you unless you pin or sew on a filter pocket. I regret the purchase based on the words of other reviewers and will be returning it. This creates another problem - I sincerely hope that this company doesn't just repackage my returned masks to sell to someone else. Good luck to the next recipient. I haven't tested since early December.
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