Critical Cover PFL (positive facial lock) Masks by Alpha Pro Tech reduces the possibility of the user inhaling airborne contaminants and creates a positive seal to a variety of facial sizes & features.
Twist-Seal chin piece design virtually eliminates gaps at the border of the mask
Hypoallergenic
PFE @ 0.1 micron = 97.8%
Includes (50) Masks - Headband w/out Magic Arch, Blue
