Prepare your school, home, and/or office with extra drinking water as you never know how long a disaster will last. SOS brand food comes with 3600kcal Food Ration Bars. The food has a 5-year shelf life, is space-efficient, great tasting and calorie dense, the food ration bars require no extra water to rehydrate, no reheating, and were developed to be non-thirst inducing.