I'm selling these because I purchased multiple packs, but the size doesn't fit. They are new and unopened. *Due to shipping costs, the box may be removed, but the masks are individually packaged, so there are no hygiene concerns. Great deal! These non-woven fabric masks are compliant with the Japanese Industrial Standard "JIS T 9001 (for general masks)," which is an indicator of mask performance. The special nanofiber processed middle layer reduces the rise in temperature around the mouth during wear, alleviating discomfort from stuffiness. They cut pollen, virus droplets, bacterial droplets, PM2.5, etc. (*). The nanofiber processed middle layer is used to prevent the entry of virus droplets while maintaining breathability. Soft, wide ear loops are used to prevent ear pain even after wearing for long periods. The 3D wire in the center of the mask maintains space around the mouth, making it easier to talk and breathe. The V-cut processing on both sides reduces gaps with the cheeks, further preventing the entry of pollen, etc. Individually packaged, they are hygienic and convenient to carry. *Performance of the mask body only. Masks do not completely prevent infection (entry).