Be prepared for a disaster. Emergency preparedness includes a compact Mainstay 3600 Emergency Food Rations kit  with 9 food bars each consisting of 400 calories.  Each food ration bar weighs 2.67 ounces. Keep this emergency food kit in your car or home. This is the only emergency food developed especially for land and marine based environments. Each pre-packaged meal provides a nutritional balance of essential vitamins and minerals in 400 calories.