Regular price $6.99

Adjustable face mask with replacement filter. Each face mask comes with 1-p.m 2.5 filter 

The general rule for filter replacement is to leave the contaminated area and dispose of the filter if it becomes damaged, soiled, or breathing becomes difficult. Even if none of these things happen, it's recommended to dispose of filters after 40 hours of use or 30 days, whichever comes first