20 1pcsrtificationnon woven dustthickened blue mask mouthfeatures as kf94

20 1pcsrtificationnon woven dustthickened mouthfeatures as kf94 b.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.