So far so good
Currently teaching full time and my largest class has 39 students with very little social distancing possible. I'm putting a lot of faith in these. I hope they deserve it. So far, they seem to create a good seal on my face and not cut into my cheeks too much. Breathability is a bit better than k95's I've experienced, but not by a lot since these still have several layers.
Rating: 5 stars