• 5-Year Shelf Life • U.S. Coast Guard Approved • Apple Cinnamon Flavor • Withstands Temperatures Up to 145º F Not only a food ration that tastes great, but is also very nutritious. Approved by the U.S. Coast Guard as well as the Canadian Transport Department and have a five year shelf life. All Mayday 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.