Good idea! Implementation satisfactory ....

I was in search of lunch boxes without plastic and because the idea was a good alternative to stainless steel: light, unbreakable and easy to transport.
Unfortunately, however, closes the lid no longer correct once the box is a little more filled and to use every time a rubber band still is permanently not the solution. Slightly larger the container could be generally doing well, two loaves superimposed is already tight.
In addition, the lid of this blue model does not involve in the dishwasher, which is very inconvenient.
So as I said, the idea is great, but you could hone the implementation, as long as I would not recommend it.