Dry ice is not camping exclusive but if you are going to buy someone an expensive cooler, you may want to educate them about dry ice. If you have never heard of dry ice, or simply do not know what it is, instead of being frozen water it is actually carbon dioxide. Dry ice is ideal for items that need to be frozen as it is around -109 degrees; which is pretty darn cold. But, it does not last very long and will need to be replaced likely after one day of use. Though, if the cooler is not regularly opened and the ice remains on top of the food, it can be prolonged. But, the cooler itself needs to be designed to handle dry ice as it is not exactly a foolproof gas.