Keep your latte, chai, coffee or herbal tea at exactly the right temperature down to the last sip with this ingenious travel mug. Sleek and modern in matte black, the Ember to-go tumbler maintains your desired temperature for up to three hours thanks to a built-in battery. Or use the matching charging coaster to keep your drink perfectly hot all day long. The twist-off, leak-proof handle lid offers a sleek carrying handle, while the sliding lid offers quick sips on the go. The travel mug makes a thoughtful gift for someone who needs their hot drinks to stay hot, wherever they are.