I work as a Nurse in Corrections and due to my stature I have to provide my own N95 mask. I purchased many mask that work fine they just don’t fit my face correctly, so I just give them away. This face mask fits perfect and I wear a 7-1/4″ hat, which is big. I cut a rubber band and tie it between the ear loops on the back of my head to reduce the strain on my ears. I just got back from a cell extraction where they used pepper spray to extract the inmate. I DID NOT SMELL ANYTHING. Granted, pepper spray is a huge particle compared to CoViD, but suffice to say this mask produced a great seal on my face. I can’t recommend this mask enough. I just purchased three more packs.