Almost every primary school student in Japan uses the same type of school bag. These distinctive, blocky satchels are spacious, durable, and packed with clever features. This time on Japanology Plus, our theme is school satchels. We explore their history, production, and future potential. Our guest is Kuniyo Hayashi, the president of a long-established satchel-making company. And in Plus One, a primary school student shows us how she uses her bag on a day-to-day basis.