Hmmm. Put mostly warm drinks -- about 10-12 -- in a soft side last week. Drove to Sonic and bought a 10lb bag of ice; put that in. This was around 4:00 in the afternoon. It was zipped up for a few hours, but when I got home that evening, with about half the drinks, I put them (ice cold) into the fridge and left the cooler's ice and water unzipped. I decided to put in some warm cans of soda -- I think I got 10 cans in there mostly or completely under water. The next morning, everything was ice cold, the water was cold, there was still maybe 2-3 lbs of ice and all this happened with the bag unzipped. I put some more warm drinks in there after taking those out and they all got cold but the ice was gone by the end of the day.