We are inexperienced campers, and I bought this cooler for a camping weekend. I needed food and drinks to stay cold for only 2 days, so I figured a 5-day cooler would work. At the recommendation of camping friends, I froze two 3-gallon bottles of water and 1 flat plastic container 4 days before leaving for the weekend. I also froze the lunch meat we brought, yogurt tubes, and apple juice boxes. I primed the cooler by letting ice sit in it for a couple of hours, and then I packed the cooler right before leaving on a Friday afternoon with the frozen bottles of water, the frozen container, the frozen food, and other perishables like butter, milk, cream cheese, cheese slices, etc. While camping, the temperatures were in the mid to upper 80s. The cooler spent time in the shade, in the back of the car one afternoon when it reached 87 degrees outside (so hotter in the car), and in the car at night with temperatures in the mid to upper 60s. Upon opening the cooler that first meal in the evening, I found that food I had refrigerated (fruit, butter) had frozen in the 4 hours it had been in the cooler. Better frozen than spoiled, though! Throughout the weekend, all of the food and drinks stayed cold, and the meat thermometer I placed in the cooler read 34-38 degrees all weekend. We came home on a Sunday evening, but I was too tired to unpack the cooler. The following day, about 72 hours after packing the cooler, I unpacked it. The thermometer was reading 38 degrees. The two 3-gallon bottles of water were still about 2/3 frozen. The flat container was about 1/2 frozen. My other freezer packs I threw in were either thawed and cold or still partially frozen. I was very impressed at how little the ice in the containers had melted over 3 days and how my meat thermometer showed the inside of the cooler was still at a safe temperature for food. The only issue I had with the cooler, and it's minor, is that there is not much clearance between the bottom of the cooler and the ground when you are wheeling it. It got stuck on tree roots a few times, but otherwise, the cooler certainly met my expectations. I was skeptical because of the price , but given how infrequently we go camping and how few days we camp, I could not justify spending a couple hundred dollars on a cooler. This cooler was perfect for our needs!