Title: It's very nice...not perfect, but nice
Review: A lot of reviewers commented on the complicated mechanism in the lid getting fouled and funky. It is, indeed, a complex little mechanism and impossible to disassemble. I would not recommend this for sugary beverages or for someone who likes vanilla hazelnut lattes. For black coffee or tea, however, there's absolutely no problem rinsing the thing out. It is absolutely spillproof, holds heat fairly well, and does what it's supposed to. The little puddle of liquid left on top of the flapper valve can be slightly annoying, but it's not a huge issue.
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