Title: these insulated tumblers are the best
Review: I currently have a stock pile of 4 of these tumblers. I use them every day, as I am a traveling nurse and these tumblers keep my drinks cold for 6-8 hours. The tops are interchangeable with each size of tumbler which is very thoughtful of the manufacturer. I've never had a problem with leakage from the seals on the lids, even if the tumbler tips over. Also, the tumblers don't sweat. Great product!
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