We first saw this innovative little container in the hands of school children while we were visiting the Orient. Over there folks put there lunches in them, their bread in the top level, veggies in the second, soup in the third, and so on. These tiffins work fantastic for that and so much more. We decided to bring them to the US and let you imagine the rest. The 4 pans nest together and have latches on the side and a carry handle on top. Also works great for storage of leftovers, baking supplies, craft supplies, small parts, etc, etc, you name it.