Currently, more than 34% of Japanese business executives bring lunch boxes to work, and this practice is expected to become more common in the future. However, conventional business bags do not have enough capacity or a dedicated space to store a lunch box. Moreover, if you put work equipment and documents into the same space as your lunch box, there is a risk of food smells and stains contaminating your papers or computer. That's why many people reluctantly carry their lunch box in a…