The Mountain House Pro Pak is a new compact vacuum pouch that won't expand in high elevations and takes up less space in your backpack. Hearty 16 oz. Serving. Convenience of a stand up zipper pouch.One thing that makes this meal so great is the fact the pouch it comes in is your bowl and, once you're done with your meal, trash recepticle all in one. Just add the specified amount boiling water, zip lock it closed, let it stand for the required amount of time, then serve. Once you are done with your meal, clean up is easy. No more dishes, just zip it shut and you're all set.