These shields are great! I have COPD, my lung function is still 24% and I can't breathe with the mask on. These shields cover your face and eyes and I can still breathe. My pulmonologist's office allows it, but my optometrist doesn't. I wear it everywhere. Grocery stores, pharmacies and everywhere I shop. I love that they have a double hole that holds the screen to the frame of the glasses. And 6 for such a price - COOL!