face mask in valve bag ear loop mask protective mask bags 3 layers dustproof facial er k kn90 prevent maldehyde mas

famask in valve bag protective mask bags 3 layers dustproof facial er k kn90 prevent maldehyde mas v.features: 3-ply design, good filtration functions. steel wire, adjust to fit your nose better. comfortable and breathable to wear. perfect for daily use, cleaning, industry, food service, beauty service, foggy days etc.