I’ve also looked for insulated bento boxes, but I honestly haven’t really been able to find anything at all that’s large enough for an adult sized meal. For all of your other things though, I’ve had a lot of luck with this bento box. It’s completely leakproof, including between compartments, and it’s a great size to carry around in my backpack (I’m a college student). I’ve had some luck just sticking it in a soft lunchbox without much shape to it for the insulation, so the lunchbox doesn’t really take up too much additional space.