(this should indicate 5 stars, but it won't let me click the 5th one for some reason). I should have noted in my other review (also 5 stars) that I completed cancer treatment at the onset of covid. I was already in a mask in public places pre-covid (which was always very awkward as people were not accustomed to seeing someone in a mask back then!) due to extreme neutropenia. So, it's important to note, especially going from a hospital mask to a fabric one, the comfort level (not just how comfortable and well fit these masks are) but the 'confidence level' I have wearing them (with the filter). I am proof, good masks do work.