We designed the UnSewn™ mask to (A) fit closely to the face of all users and to leave no gaps, and (B) to be easy to breathe through. It is not designed for heavy industrial use, but rather for light to moderate indoor work. When a user inhales, the air has no problem going in directly through the UnSewn™ mask, rather than through a gap, and the air is thus filtered before it gets to the user. In addition to our own 40-Second Fit-Factor testing, in which our mask outperformed N95 earloop masks, an aerosol filtration scientist tested our materials in a laboratory for both filtration efficiency and ease-of-breathing, and his findings allowed us to conclude that our results are indeed valid.
We greatly appreciate the input of our aerosol scientist-collaborator. We will be providing a link to any publications in which he references this project or provides project-specific data.