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Title: Did not even last a month
Review: I purchased three as gifts and one for myself. It was great for several weeks and agree it did not leak. After almost a month of use, the rubber around the stopper mouth came loose and therefore will no longer fit in the bottle. It is completely useless at this point, especially for the price. I have no idea of there is any warranty on a product like this but let's hope the gifts I bought do not get usage.
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