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I had mine for 11 years, lost it last year. Replaced it with an insulated version and very happy with it although their sports cap still needs refining, they're on version 3 but it still leaks!
Also got a KK insulated coffee cup with the leak proof lid, very good but lives in the cupboard mostly. I use a large Yeti insulated cup/mug as my daily coffee receptacle, I make my coffee at 7am and it's still hot a couple of hours later, can't argue with that.
Second one of these, the first put in 3 years of daily service before being left behind at a hotel in Mexico last month :(
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