2400 Calorie Emergency Food Bar for Surviving after a Hurricane, Flood or Earthquake Finally!! Not only a food ration that tastes great, but is also very nutritious. Our 2400 calorie emergency food bars are great for any family's 72 hr emergency disaster kits & family preparedness planning. Be sure to order enough emergency food bars for not only your family but others that may be with you in a crisis situation. Not only a food ration that tastes great, but is also very nutritious. Our 2400 calorie bars are approved by the U.S. Coast Guard as well as the Canadian Transport Department and have a five year shelf life. All our food rations are baked under strict supervision and all have that great taste of apple cinnamon. Mayday food rations can be stored outside up to 149 degrees (F) and can be eaten without preparation. Available in single bars or in cases of 24. These bars have a shelf life of 5 years.