Review on Breath-Responsive Replaceable Protection Filters: Premium Respiratory Defense by Brian Inman

I ordered these because my original order from another seller didn't arrive. Arrived on time as stated. Bought them for the crown. Good quality, very thick and heavy compared to other masks. The only negative is that the heat makes it difficult for me to breathe, but they breathe anyway; The heat only makes things worse. Highly recommended 👍