This is a 4-layer non-woven fabric mask. I bought two boxes, but the size was a little small for me, so I am selling one unopened box. Child size: Approximately 12.5mm x 90mm 75 masks x 2 packs, for a total of 150 masks. The white box in the third photo contains 75 individually wrapped masks. (Photos 2-4 are reference photos. They were taken with the ones I am currently using.) Features: ・Double wire that fits the nose and mouth ・Soft material for comfortable mouth feel ・Antibacterial and deodorizing non-woven fabric ・8mm wide ear straps are gentle on the ears ・Hygienic individually wrapped type ・Member of the National Mask Industry Association Although it is new and unopened, it has been in someone's possession. Please refrain from purchasing if you are concerned, as this is a hygiene product.