Lock & Lock insulated bento set
Insulated lunch set by Lock & Lock, the Korean tupperware by Hanacobi Co. (exploded view here). The bottom two containers are 350ml each (12 oz), with a 300ml drink container/cup on top. All stack and fit into its own little fitted insulated carrying case with zipper. One bottom container is divided, the other is not. Microwave/dishwasher-safe, and water/air-tight. Bought at Kamei in San Francisco (Bay Area bento shopping guide here).