With the N95 mask, I do not feel much crowdedness in the wearing style, I think that this model is probably the most popular. It is regrettable that the price is higher than at the time of purchase, but it is profitable with 50 individual packages. It is recommended as a preparation for the time of emergency.
Influenza infected people also increased since the announcement that atmospheric pollution including PM 2.5 included standard values exceeded even in Japan, high-function masks have been selling steadily and out of stock. I felt it was necessary to prepare early for anything.