3 Layer "Olson" Style Face Masks

What is an "Olson" Style Mask?

The Olson Mask Pattern was designed by medical professionals to be used when other surgical and N95 masks are not available.

It is curved to fit the nose and mouth area, and the third layer is actually also a pocket on the inside to hold a filter if you want to use one for a 4th layer (but you don’t have to).