Bought two of these for the 2018 hunting seasons. Camped in an extremely dry high desert area. Cold nights, hot days. Put two blocks of ice in with the food. After four days the blocks still looked basically whole. One block and two crushed bags of ice in with the drinks cooler. After four days blocks still whole, crushed ice about 50%. Great coolers. Wish they would make a 72-120 quart size though.