That's not a typo. The cooler I'm recommending to you costs $300, but stick with me. It's worth it.
We have all been in this situation: It's late in the afternoon on a baking hot day at the beach and the provisions you've stored in that $5 Styrofoam cooler are now swimming in tepid water. Leaving someone, probably you, to make a dash to the nearest drug store or bodega for more ice. Party foul.