I gave this cooler a test run at home, prior to my upcoming trip. I put in 4 bottles of water and filled the cooler half full of ice. I checked it every 4 hours. The ice was completely melted after 12 hours, however the water stayed cold for 24 hours. Best of all, the cooler did not leak! With the benefit of folding flat this will be great to put in a suitcase and use on my next Las Vegas trip. Hotels in Vegas rarely have in room refrigerators, so this cooler will work perfect without leaving a puddle of water.
Does not leak!