I work for a dentist office and go through mask very quickly. It was getting very costly and some of the mask I purchased did not fit properly. I love these masks and will keep purchasing very good quality.
I have always wanted to purchase a pulse oximeter and now I felt like I had more than one reason to do so with the COVID 19. Works great.
I had no idea what Byrus approved meant until I did a little research. Like the good housekeeping seal of approval for PPE. I felt safe with my purchase and it did not take a month to get - shipped the next day.