Brought this to Yosemite for a 5 day trip.  Temperatures were in the high 90's each day, and this cooler took it like a champ.  Pre-cooled with a sacrificial bag of ice the day before, used reusable Ozark Trail Ice bricks to line the bottom, layered our food per the instructions and it retained 50% of the ice through day 5.  Enough room for food for 6 big eaters--though we didn't use it for any drinks to save space.  It was awesome not having to put the cooler in the bear box--saving space for dry goods and other smellables.  Easy 2 man lift when full.  Drain feature rocks--no leaks, clears water quickly.  Appreciated the locks too.  No slip feet on the cooler are perfect to keep it from sliding in the truck bed.