Its Certifications/Standard: GB 2626-2006 (China KN95 Standard)
Benefits:
It has a material: Filtering Polypropylene meltblown cloth, nosepiece metal, elastic for earloops, nonwoven cloth.
Its adjustable nose bridge and stretchable ear bands ensure a comfortable fit for all users. One Size fits most.
It comes with a Multi-Layer: Outer Layer (50g Non-Woven Fabric), Third Layer (45g Hot Air Cotton Fabric), Filter Layer (40g melt-blown non-woven fabric), Inner Layer (30g non-woven fabric)