Solid contact structure mask.
Nose plumber fits the shape of the nose Create a free space around the mouth, relieve tightness, breathing and conversation in the center bar. You can use it comfortably.
(The face is size for small people or women.)
PFE (particle filtration efficiency) 99%
VFE (virus spray filtration efficiency) 99%
BFE (Bacteria Filtration Efficiency) 99%
Pollen Prevention 99%