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Title: Leaks if it is not upright
Review: I bought this to carry coffee to work. The first night I filled it with water and turned it upside down to see if it leaked, it did not. The next day I filled it with coffee and again turned it upside down, it leaked making it useless for my purposes. I don't know why it did not leak with water. I have tried replacing the o ring but that did not help. It does keep the beverage warm. But if you have to transport it where it is not upright you will have whatever is in it all over the place.
