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I got 2 of these. One lid broke (the silver button got jammed in the open position) within a month. The second seems to have started to go moldy or rusty in the bottom. I wash it after every use so not sure mold is possible, but either way - suspicious. These used to be bomb-proof thermoses that could handle warm tea. Not anymore.
We have had one of these for years without issue. Love this product and would highly recommend it. Keeps drink cool as stated and has never leaked. Replacement straws are inexpensive and easy to find too.