Simple rubber band fix improves surgical mask seal to N95 levels, study shows

Throughout the COVID-19 pandemic and when maximum protection is needed against air-born infections, the N95 respirator has remained the gold standard of personal protective equipment. However, it is also much more difficult to produce and obtain than a standard surgical mask.

source https://medicalxpress.com/news/2022-08-simple-rubber-band-surgical-mask.html