1. The face masks protect against the infections.
2. A coated metal strip in the mask acts as a support to keep the mask secure when worn.
3. The 3 Ply facemask provides 95% BFE at 3.0 micron size; and 97.6% PFE at 0.1 micron size.
4. Tie on string ensures user can comfortably tie as per the need.