The Largest Bento Lunch Box Store on Amazon Makes Portion Balanced Lunch Creation Easier and Cuter Than EverBOSTON, June. 9, 2023 /PRNewswire/ -- kinsho, the largest bento lunch box store on Amazon with over 200 products for kids and adults, today announced twenty seven (27) new lunch box sets in their popular kinsho Kids Bento Lunch Box line, a best-selling lunch box for kids for school. kinsho Bento Lunch Boxes for Kids are lunch containers with four or five leakproof compartments and removable tray that help moms send eco-friendly, portion-perfect lunches with their young children to pre-school and kindergarten.