DUE TO GOVERNMENT REGULATIONS WE CANNOT ACCEPT RETURNS ON THIS ITEM. Packaged 50 masks per box - Minimum order of 1 box of 50 masks. 4-Layer Protection FDA Registered Certified CE EN-149 FFP2 Adjustable nose bridge Filters out dust, germs, smoke, pollution and almost 95% particles in the air 4-Layer KN95 Mask. Filters out 95% particles in the air. 3D design, breathable and soft. Adjustable nose bridge. Certified CE EN-149 FFP2. This product meets the standards of GB2626-2006; EN149:2001+A1:2009. 4-layers are Non-woven fabric, medical cotton, melt-blown fabric and filter cotton fabric. This mask meets emergency requirements for hospital and medical use, but we only recommend it for the use in the general public. Currently in stock and shipping within 3 business days, but due to COVID19 some shipping and/or delivery delays can occur. You are ordering by the box of 50 masks. If you need more than 50 masks, just order additional boxes.