Man I'm behind! I've been working on setting up an online bento store. I'm surprised by how much work that is! When we were in dasio I found a bento I haven't seen before. I bought one to sell in my online store, and I figured I'd better try one myself! Total volume is 470ml.
The blue section seems quite water tight. I filled it with water and shook it around, only a few drops escaped. It can sit lid down in the yellow compartment or snap lid up on the yellow section. Definitely need a belt to hold everything together but I like it. Its weird to be sure. But I like the options.
Blue section snapped lid up on the yellow section.