Features: Three layers of protection for effective filtering
Outer layer: non-woven material, inhibits dust
Middle layer: Melt-blown electrostatic micro-filtration layer, efficient filtration, isolation of fine particles from dust, droplets, etc
Inner layer: ultra-fine soft fiber, skin-friendly thickening and moisture-proof
Elasticity on both sides effectively reduces ear pressure
Better protection in smog, public places, and offices