My girlfriend and I just returned from a 7300 mile trip with a 24 liter Wagan cooler/warmer in the back seat. We have never used a heating pad so my rating is based on the cooler. We left eggs, yogurt, cheese, meat. No problem! That was great! In June and July we were in the deserts of the US Southwest, Phoenix at 111f, the Grand Canyon, Montana, Dakota, etc. We visited all the places known for their sunny daytime heat and coolers kept cool. He saved a 5 pound tube of 95% frozen meat from a direct trip to Louisiana from South Dakota. Why 4 instead of 5 stars? There are 2 reasons. Less important, the connector cable is connected directly to the cooler, so it won't come loose. It would be really nice to be able to detach the cord although it has storage. More importantly, it doesn't come with an outlet adapter. They can be purchased on the aftermarket, but this cooler should work fine with what's included in the kit. It would be great if you could hang it on the wall. A $30 adapter is very unattractive, but another $10 for one with wall or 12v options would be attractive.
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