It's like putting a plastic cup on your face. You can't breathe through them at all, so your breath goes around the mask. They also breathe the air around them without being filtered. They were too big for me so I gave them to my husband. After being safe and wearing masks for a year, he developed Covid. We'll never be able to prove it, but he thinks those masks are to blame. That's the only thing he's changed in a year. You should have a breathing mask to filter the incoming and outgoing air. Buy for functionality, not fashion.
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