Insulated food jar is easy to open and keeps hot or cold for hoursThe perfect food jar is easy to describe. First, it has to be easy to open and convenient to eat from. Second, it needs to keep ice cream cold and soup hot. And last, it needs to travel without fear of leaks or breaking. Thats the jar Hydro Flask made so you can take your yogurt parfait to the top of the trail or your spicy curry down the river.