[ungruntled]

I have 3 different brands of what are claimed to be KN95 masks. All do not fit in different ways. All use plastic nose bends, ear loops and either air comes out sides, chin, or nose area. I have 3M trifold N95s from before the pandemic and those fit perfectly without significant effort. The nose area uses metal and dense foam to ensure seal. I think the main seal issue with KN95s is that they are thin, flimsy and are missing some basic features like the foam, metal nose piece and head band.