What is so special about the Stanley tumbler?

And like many other Stanley vessels, the stainless steel double-wall vacuum insulation (which founder William Stanley invented more than a century ago) keeps your drink cold for hours—up to 11 for the Quencher. It will take ice in the cup two days to melt (which would make for a very long TikTok video).



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Once the Stanley Quencher H2.o FlowState Tumbler went viral on TikTok last year, it was near impossible to get your hands on one. It sold out repeatedly for months on end, and Stanley cup restocks were typically gone within a day or two.

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