Perfect size and exactly what I was looking for.
These lunch packs are the perfect size. My kids have the yumbox tapas bento lunch boxes and snacks size. Without expanding it fits the tapas box, and if expanded out it fits the tapas and snack with space for a juice box or flavoured milk.
I love that the ice bricks have their own compartment it means they don't have to juggle them when trying to get to their containers and worry about trying to play tetris getting everything back in to put it away after they are done. I would definitely recommend this cooler bag.
I also like that it has the handles in 2 positions making it easier to slide out of their backpack compartment.