Be Healthy is the Official Distributor of "BOTN" in the United States of America. For hygiene and safety reasons, all mask sales are final. Opened or unopened masks are not eligible for return or exchange. * All KF94 masks are individually packaged. *Features CDC NIOSH Testing Result FDA Approved (Class 2: 510k, MSH) KF94: Certified by Ministry of Food and Drug Safety, South Korea Graded “Excellent” from Dermatest Adjustable earloop Hard shell technology filter by DuPont- Higher resistance to outer/inner pressure.- The mask will not deform easily - a very firm mask. Premium quality 4 ply mask with Melt Blown filter More interior space Size Guidance Large: Length 230mm / Height 150mm Medium: 210mm / Height 140mm Small: Length 180mm / Height 120mm * Allow ±5mm margin of error per size
