Title: Leakproof? HA!
Review: Sure, it doesn't leak from the top, but it leaks from the sides, where the lid screws onto the tumbler. Every time I think, maybe this is a mistake and it'll work again, I open my bag (or I look down at my bag) and see spilled coffee all over. It is really not the best start to the day.The button is NOT depressed. I have tested it several times by holding the tumbler horizontal in my hand, and of course, coffee just leaks from the side.Also, the other reviews about cleaning this tumbler are accurate. The lid is impossible to clean.The tumbler does not keep my coffee hot through my morning commute, let alone throughout the work day.I've had this tumbler about five months, so I have really stuck with it, but I regret this purchase.
Is this product review negative?