I loaded up a yeti 125 cooler with a bunch of frozen water in plastic bottles. I loaded the cooler up on sept 14th. I ended up not needing the cooler and just never got around to unloading it. Last night on sept 25, I unloaded the cooler. There was still ice in the plastic jugs. That is pretty cool, granted there was not a lot of ice, but 11 days and still ice is pretty good in my mind. I might not care for there politics or other stuff, but they do make a damn good cooler. Kudo's to yeti for a great product. I am not as sold on there hoppers though.