This is a set of Unicharm masks for kindergarteners and elementary school students. * Cho-Rittai Kodomo (Ultra 3D Kids) - Made in Japan 5 masks per pack x 4 packs * Kindergarten-Specific Cho-Kaiteki (Ultra Comfortable) 3 masks per pack x 4 packs * Elementary School-Specific Cho-Kaiteki (Ultra Comfortable) 3 masks per pack x 4 packs (3 packs have a polar bear design) These are all Unicharm products and were very easy to use. I bought extra for stock and stored them at home. They are effective for preventing infectious diseases, pollen, and PM2.5.