Title: Does NOT stay hot.
Review: Perhaps I got a dud? This does NOT keep my coffee hot. The first time I used it I put coffee w/ milk in it about 8am, put it in my kayak hatch, hoping for a mid-morning coffee break on a day-long kayak trip. Was I ever disappointed to find the coffee BARELY lukewarm after 3 hours. I was shocked because I'd read so many glowing reviews about how well this mug performs. Well yes, it doesn't leak, so there's my 2 stars rating.For my next day's trip I made iced coffee, thinking the mug might do better at keeping things cold. Unlike another thermos I'd used before, 3 hours later, the ice had melted and the coffee was only "cool", not cold.The last time I used it I put my hot coffee in before I went out to walk the dog. When I came back an hour later, the coffee was lukewarm. It probably should be noted that my coffee includes steamed milk, so the temp is not boiling hot when I start. But it is hot.If I could return this I would. For me, the Contigo tumbler was a total waste of money.
Is this product review negative?