
Well we live in the desert so the heat here is much stronger than other places but the ice water doesn't keep cool for more than 3 hours. We had 6 water bottles and they do NOT work outdoors in extreme climates. They might work better elsewhere, but they also MELT in extreme heat! Yes, you read that right, it melted. My husband spends a lot of time at work and he's melted๐ข. If you want to keep it indoors it's a pretty good little cooler and handy, but outdoors I'd recommend an arctic cooler. FYI, when my husband tested this cooler, he filled it with ice (to the top) and then covered it with ice. The water has warmed up in 3 hours, so in the heat nothing lets cold through!

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