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The Jūl™ is a heated mug which keeps hot beverages at your perfect drinking temperature for as long as it takes you to enjoy every last drop.



There’s nothing like the perfect sip of coffee; not too hot, not too cold, full of flavor and body--completely satisfying. Unfortunately, those perfect sips aren’t as common as we’d like.

Traditional mugs and paper cups cool too quickly, giving you only a few minutes in that perfect temperature range. Insulated mugs keep your drink dangerously hot for hours. The Jūl is the best of both worlds: it looks and feels like your favorite tumbler but cools quickly to your desired temperature and stays there.

With a quick twist, the Jūl lets you control your preferred drinking temperature with precision and maintains it while on it's USB-connected coaster.

The patent-pending technology inside the Jūl knows the temperature of your drink and tells you when it’s just right, while the integrated heating system will ensure it stays there.



The Jūl’s heating technology is elegantly built-in between the inner and outer walls of the mug. Its interface is made up of clever, analog dials and subtle light indicators to let you know when your drink is just right. It is wirelessly powered by setting it onto it's compact, USB-powered coaster, so you can use it anywhere. To save valuable space for coffee and extend it’s lifespan, the Jūl is battery-free. This not only helps keep it lightweight, but easier on your wallet.

The marks on the side of the mug indicate the Jūl's minimum (120°F) and maximum (150°F) temperature. Within this range, the subtle tones and flavors of the coffee are revealed, while the temperature isn’t so high that it makes it difficult to taste the coffee itself. Twist the cup to pick the temperature you prefer. 

Once you've selected your perfect temperature, set the Jūl on the coaster, and watch it light up. 

If your drink is hotter than the temperature you chose, it will glow amber

If it is colder, it will glow blue

When the Jūl’s base glows white, its just right. Enjoy.

When designing the Jūl, we wanted a lid that made drinking comfortable, could close to maintain heat, and allow a drink that is too hot to cool down. The concave design allows for easy sipping with no pesky nose-to-lid contact.

The Jūl’s lid offers three settings: vent, seal or sip.

Simply twist the lid to vent for quick cooling, seal to keep things hot, and sip when you’re ready to drink.

You drink coffee where you live and work, so we designed the coaster to unobtrusively integrate into your space, whether on your desk or counter. It's powered by any 2A USB port, which means you can power it with most computers or the included wall adapter.

The bottom of the Jūl has two electrically conductive rings that align with the coaster's power pins to provide seamless, wireless power.

Spend some time in the car? We didn’t forget you! We developed a car coaster that fits into most standard cup holders and is powered by the included power adapter for your car. Whether you’re commuting to work, adventuring around in your van, or spending your workday in and out of your car, you don’t need to live with lukewarm coffee any longer.

You shouldn’t need an app or WiFi connection to have a great cup of coffee. With the Jūl, all you need is a USB port to keep the coaster powered and a smooth turn of the base to control the temperature. No apps, no in-your-face digital screens and no WiFi required; the Jūl keeps things simple and easy.

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  • Nicole
    Hi! I miss the first live run! Is it too late to add in one more order?
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    Hey @Nicole! Do write in to us at ! We'll see if we can help you out :)
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  • Allan Hoo
    Hi, how long can the Jul mug hold in ideal temperature when not powered by coaster?
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    Hey Allan! This doesn't seem to be mentioned by the Jul team but as the Jul does not coming with any built in heating mechanism (everything is built into the coaster) I would probably think that the Jul would fare just like a normal dual-wall vacuum insulated mug would?
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  • itml
    Is this the like ember mug? Is like all alike in feature
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    Hi @itml! I do think that the Jul and the Ember function similarly. They both aim to bring you coffee and tea at your ideal drinking temperature by heating up and slightly cooling your lukewarm or scalding beverages. However, I think one fundamental difference is that the Jul is only able to perform its heating function when placed on the heating coaster. The Ember on the other hand has that heater inbuilt into the mug. This could mean that the Ember would weigh more than the Jul. The Ember also seems to require charging up its internal batteries while the Jul relies on a heater coaster that needs to be plugged either into a wall plug or a car cigarette lighter or even a powerbank or laptop. Hope this helps!
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