We did leak tests on bento containers and lunch bowls. We loaded specified compartments with h2o, closed and shook the boxes, and assessed whether it seeped between compartments, or out on the container. The black bag seems to be much more similar to a flimsy pizza shipping and delivery sleeve. https://lunsjavtale-for-bedrifter58249.popup-blog.com/31807952/lunsjavtale-for-bedrifter-options