I just got back from a southern Arizona deer hunt.  I put ice in the cooler on Wednesday night before leaving Northern Arizona.  Added some more soft ice on Thursday about noon along with more food items.   It is now Wednesday, about noon, a week later and I am back home unloading.  hard to believe but cooler still has at 
least a third of the original ice from a week ago after sitting in the back of my side by side all week long with things being taken out and added through out the week. Also, It’s  so air tight that you have to lift the lid to even get it to drain out the water half way decent.  You have definitely won my approval on this one