There's only one bad thing about coffee in the field: It gets cold way too fast. Well, here's a solution for that.
Heavy duty construction, these thermoses hold 1l of coffee, which, for a "normal" person is enough to get your through the day.
If you know anything about thermoses, you'll know they usually go for super high prices. Not the case with these. Field-tested, and ready for your hunting, fishing, camping, or whatever other kit you have, this will be a worthy investment.
NOTE: These are used, so expect some surface wear, but all will be 100% functional and awesome.