Mainstay™ Food Rations has emerged as a product unlike any other. Before it came into the picture, emergency food bars had a very short life span. Survivor Industries changed all that when it created a great-tasting, non-thirst provoking product with an extraordinary five-year shelf life. Mainstay™ is specially formulated for land-based high stress situations. Each package contains 9 pre-measured 400 calorie meals, which allow a person to get their full nutrition in a quick, tasty form.