1.- Insert a filter into the inner surface of your mask.
2.- Pull the mask straps around your ears.
3.- Replace the filter after 80 hours of use, wash the cloth mask after use, and let it dry completely before the next use.
4.- For optimal protection, we suggest washing each mask before first use and after every wear—and always washing your hands before putting it on and taking it off.
5.- Filters are standardized and replacements can be purchased online