Have you ever heard of cooler shock? Or kooler gel the ice extender?
A buddy turned me on to theses products a few months ago and I love them! I use them in my rtic coolers. I have not used them yet on a long trip or put ice in cooler with them yet. My buddy has used with ice in cooler and it will make the ice one solid form and if beer is against the cooler shock will turn it slushy.
The kooler gel you mix it your self and put it in gatoraid bottles of different sizes. You can look at the reviews on Amazon.
