Do you remember Ember? Maybe not by name, but perhaps you recall the company’s defining concept: a mug that keeps your drink at your preferred temperature, and not a degree cooler, for hours at a time. On Wednesday, it got just a little bit better. Please know up front that the latest news from the Ember Ceramic Mug and Travel Mug is about as iterative as it gets. In fact, it’s barely about the mugs themselves at all.

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