Ember’s new temperature-controlled tumbler is its biggest and most expensive mug yet

The Tumbler is a 16-ounce black travel mug that claims to be able to keep your beverage at exactly the temperature you want it for hours at a time.

It comes with two lids — a twist-off one with a handle and a sliding lids with a mouthpiece.

The battery lasts three hours , and you charge it by placing the mug on its charger / coaster accessory.

It's available for presale now and ships on September 22nd .