Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Not so good.
Review: Insulation properties are excellent. Problem is that the platic portion inside the mug picks up an unpleasant old coffee smell over time that does not clean up. I suspect it comes mostly from the soft plastic washer than rings around the top. Impossible to get the smell to go away, even with a dishwasher.
