Black All Keeper KF94 Mask Made in South Korea 4-Layer Protection with high quality ‘KF’ for Korea Filter & ’94’ for ave. 0.4um particulate matter filtered, min. 94% blocks up and protect against very small particles. High Elastic Ear Loop, Pose Less Press to Ears and Face, Avoid being Uncomfortable from a Long-time Use. Each mask is packed individually for Hygienic purposes. 3D Tri-folding Stereoscopic Design: Our mask covers not only the respiratory system but also the chin and maintains cleanliness as foundation, lipstick, etc come in less contact to the mask. Black All Keeper KF94 Mask: 4-Layer Protection with high quality ‘KF’ for Korea Filter & ’94’ for ave. 0.4um particulate matter filtered, min. 94% blocks up and protect against very small particles.