Best Tumbler Stanley vs Yeti Let’s Find Out-

A bit of good quality mixed information is a good thing..... Like if you don't have much in the way of frozen goods, and you need to get home... you can wrap them in a blanket or a few towels... = insulation. Works well for a while.

Or if you lack an ice box, wrapping your cold food up in a sleeping bag - in multiple wrappings, works a treat... keep it out of the sun, down on the floor and add extra material under neath and over the top... works real good...