30 masks with high breathability and comfortable wear. I purchased multiple boxes, but the size doesn't fit, so I'm selling them. Brand new and unopened. *Due to shipping costs, the masks may be sent without the box, but they are individually packaged, so there are no hygiene concerns. Great value! These non-woven masks conform to 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 prevents 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, making them hygienic and convenient to carry. *Performance applies only to the mask body. Masks do not completely prevent infection (entry).