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I wish they included KN95s for comparison... I prefer them because they're easier to take on and off, and the seal seems reasonable to me (breathing in/out causes the mask to deform, so it's clearly filtering some air)

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Aren’t KN95s just N95s with the Chinese standards (vs US standards) but should technically work for the same particle sizes?

GP is probably referring to KF94, the Korean standard. Their form factor is somewhere between a surgical mask or an industrial / medical N95. They are quite popular, here in HK, with people who want to protect their makeup.

Example: https://www.amazon.com/KF94-Protective-Individually-Packaged...

Technically yes, but US standards require a headstrap... which is generally tighter in my experience. I'm wondering if the ear loops reduce efficacy significantly (assuming fit is proper otherwise).

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