The lid can be removed completely. The lid has a seal that holds the socket also tight. There was at least in my test no water.
It is supplied with a partition that can be moved around.
The Lunschbox is processed very well with one exception. The cover of my box had a slight ridge, who can dare to remove himself with a knife. I take it from a star because for the price I have to be well burred considers'm the product also.