KN FLAX KF94 Masks For Adults - Face Protective Mask (White) [Made in Korea] [20 Individually Packaged] Premium KF-94 Certified Face Safety White Face Mask Dust [English Packing]Brand: KN FLAX Color: White Features: EXCELLENT PROTECTION & FILTER EFFCIENCY 94%: The KN FLAX KF94 Mask White is crafted as a 4 Layer Protection, Non Woven face mask, including high quality MB (Melt Blowed) filters. Our kf94 mask blocks more than 94% of the average particle size of 0. 4m. Experience the fusion of comfort and superior protection with KN FLAX KF94 mask made in korea! COMFORTABLE AND ERGONOMIC DESIGN : Our Premium KF94 Mask Ergonomic 3D