These cloth masks aim at effectively blocking splashes and large-particle droplets, and are specially designed towards respiratory diseases, that the N95 mask aren't.
For more information about this research, kindly visit the below FDA link:
https://www.fda.gov/medical-devices/personal-protective-equipment-infection-control/n95-respirators-surgical-masks-and-face-masks
For sales enquiry, kindly VISIT: https://www.gpcmedical.com/1286/COV003/reusable-face-masks.html