Quality is very good, cooling works well. Nevertheless, the product is not well thought out. The cereal cup is screwed onto the milk container. He is also tight. But if you screw the parts apart to enjoy the cereal, then the bottom of the cereal bowl is wet because there is no cover between milk and granola cup. So you need always also a shell from which you can eat. So this mug is good at best for transport, but not for "road use".
