It is basically just a 1 qt military canteen & metal canteen cup. What he does is cut the bottom off another plastic canteen and uses that as a separate cup. He uses the metal canteen cup to heat the water and adds a wire handle to it. In cold weather the plastic cup doesn't lose heat as fast. The wire handle is bendable/collapsible and lets you hang the metal cup over a fire. It all nests together in the canteen cover.
I keep a couple coffee bags (like tea bags) and heat tabs inside the canteen cover for coffee on the go... If I remember that it's there.





Not sure why I have blue tape on the canteen though..