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Filled it with coffee at 7am and it was still properly hot at lunch, which honestly surprised me for a tumbler this size. The insulation really does what it claims, and it fits my car cup holder without wobbling.

The lid seals tight enough that I can toss it in my bag without worrying about leaks. Insulation is no joke either, my latte was still warm when I finally got to it after a busy morning.

Keeps my coffee hot for about two hours longer than a regular mug, which is nice, but the lid isn't fully spill-proof—I've had a few drips in the car.