KF94 Korea 3-ply Mask for Adult. Manufactured in ChinaPM 2.5 filterAnti-Dust & pollenBFE >95% - CertifiedProvide face contour to limit unfiltered airHighly breathable 4D structure to reduce stuffiness.Adjustable bridge that can be manipulated to get a secure fit over the bridge of your nose and effectively blocking up to 99.9% airborne particles. Fit closely to the bridge of the nose, thus, no fogging on glasses.Cottony 5mm elastic ear straps to provide comfortable fit for long use.Size: 20cm x 8cm1) Outer layer PM2.5 – Water resistant Non-woven fabric to filter large particles2) Electrostatic Melt brown fabric – Filtrate 99% of small dust, haze and bacteria3) High efficiency non-woven fabric to prevent smaller non-oily particles4) PP skin friendly, non-woven soft absorbent fabric to provide comfort to the skin