NO ICE, NO PROBLEM

MANY OF US KNOW THIS SCENARIO. YOU flip open the lid of your cooler and plunge a hand in, only to find that the once expertly crafted pastrami on rye with ballpark mustard, garden-picked tomatoes, and crisp lettuce has since disintegrated into an amorphous blob of goo. What happened? Melted ice.

While ice chests can be simple and inexpensive, spend enough time off-roading with one ratcheted to the back of your rig, and there’s a good chance you’ll encounter a soggy lunch, or worse—a slushy mess leaking out from beneath the lid as the vehicle moves. Or, you may not