Cooler Shock recently joined a group in the California desert to put Cooler Shock to the test. We had a great experience over 3 days pulling the ice packs out of a storage cooler in which we stacked extra ice packs. We put them to use as needed throughout the 3 day weekend. The results were great with bacteria free cheese, ham, vegetables and food toppings. The beer was perfectly cold. We use basic coolers from big box stores.