They are 64oz a piece. They cost less than 4 bucks piece. Somewhere on this thread I have a link to the rubbermaid site. I dipped the tops in some boiling water to allow me to smush it down so it would fit better. The top part sticks up about 1 - 2. After smushing it down, they fit perfectly. If you are flying 40 - 91 size planes you can fly all day with those two jugs. Hope this helps.

Lee