Great cooler. I can confirm that the 52 quart/49 L classic cooler from Coleman can keep the ice for more than 3.5 days! I placed four large Tupperware with frozen water in them into the cooler. The top container melted fastest and was completely melted by 90 hours. However, the three other containers below the top container were not fully melted by 90 hours. I have included a photos taken at 24, 48 and at almost 72 hours. At nearly 72 hours the top container was 90% melted. The 2nd was 40% melted. The 3rd was 35% melted. The 4th and bottom one was 50% melted (not shown). Love the handles for carrying. Love the drain I opened and closed the drain at the very beginning before using the cooler,and when there was water built-up in the cooler, it did not leak. At nearly 200 pounds I can sit on the cooler with no problems. As others have said, the lid hinge causes the lid to close. It will not stay open when opened. I have something that I put in the space next to the hinge that keeps the lid open until I’m done working in it, but I wish it would just stay open when I open it until I’m ready to close it. This isn’t my first Coleman so I was already aware of this.