Gadget reviewer Doug Aamoth can slam a beer in mere seconds, so he wonders why anyone would need to keep a drink cold for 24 hours. Even so, he tests the 30-ounce stainless-steel RTIC tumbler -- a poor man's Yeti, if you will -- to see if it can keep cold drinks cold for 24 hours and hot drinks hot for six. Watch Doug's review to see if this portable sipping device is up to task.

Doug watches ice melt in a steel tumbler for 24 hours

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Doug watches ice melt in a steel tumbler for 24 hours

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