
I bought these for protection against pollen, not related to Covid-19. Of the four I've tried so far, I've had two where one of the two straps broke off when trying to put it on. The ones that didn't break fit more loosely than my old original N95 masks, allowing air and debris to seep down the sides, making them useless for pollen. The material of the mask seems fine, so if the straps still break I will intentionally peel them off, shorten them for a tighter fit and reattach them with epoxy. If that doesn't help, I just throw them away. I wouldn't buy them again.

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