This was the first time I ever considered purchasing a face mask. Social distancing made it happen. I found the Modernna mask in Amazon. Received very quickly. The mask has 3 pleats so it adjusts completely and comfortably over my face from nose to under the chin. A small wire embedded in the top of the mask assures a secure fit around the nose. Lightweight and breathable are must features and the Modernna mask is both. Note: After using the mask, have washed by hand in Woolite detergent and “solar” dried outside for a day. This is high pollen season and the mask filters the pollen nicely. Only used washed mask while cutting grass or working in garden on high pollen alerts.