I bought this product after much searching on amazon, because I was fed up with having to take two tubs to work with cereal and milk...great, I thought, a solution...
Well if you do not eat much cereal and do not have to move the tub you will be fine.
I was slightly disappointed by the size and have discovered the best cereal to fit in it is one with small particles made from rice (you know the one).
On the diagram it suggests that you place the cereal in the bottom and milk on the top, but you can't get much milk in that way and, when traveling, the milk leaks into the bottom compartment making the cereal soggy.
I have tried doing it the other way but you don't get as much cereal in as that is not its design.
The seal on the lid is very good and you can turn it upside down and it won't leak...but don't because when you turn it upright, the milk will leak into the bottom.
I use it as a container for yogurt and fruit now and it works fine for that purpose, but for those of you who like a descent size bowl of not soggy cereal, I would look else where.