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Title: Effectiveness depends on the cup
Review: This pad does get pretty hot, but how well it keeps your beverage hot really depends on the cup that you use. The problem is that most (all?) mugs have a circular bottom, so the actual surface area that contacts the pad is pretty small. That being said, my drink never really got colder than a step hotter than lukewarm, so I guess it works fine!Safety is somewhat of a concern, though. It uses a simple on/off switch, and I'm not sure what will happen if it is left on for days at a time. I think a system where it is only on when a cup is on it would be awesome.Your cup also sits about an inch higher off the table, so risk of knocking it over is a bit higher.Overall, a good and cheap solution to the everyday first world problem of keeping a hot drink hot.
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