Choosing the right size box
By now you are excited about the idea of packing bento for lunch, but what size box do you need?  Well, we'll help you figure it out!
The size of your bento box is determined by your age, height, and activity level.  

Women

Men

Step 1: Find the right size for your age and height:

Step 2: Adjust for your physical activity level and height:

Physical activity:
.
Level 1:  Low (spend most of your time sitting or quiet)
.
Level 2:  Moderate
.
Level 3:  High (lots of exercise, sports, etc.)

Add 100ml to your box for:
.
Taller than average height
.
High physical activity (Level 3)

Subtract 100ml from your box for:
.
Shorter than average height
.
Low physical activity (Level 1)