I think a lot of coolers work better if we just take a few precautions. First I always have an old wool blanket in my vehicle. I fold it up and lay it on the top of the cooler. After a while the bottom of the blanket is cold. Anything to insulate the cooler. Also keeping it in the shade. Making sure that stuff is cold before you put it in. I have seen people put warm beverages in a cooler and add ice. If it is cold first it will stay cold longer. Also unsing the enough ice.
