These are a definite MUST have! One of my biggest issues with drinking coffee is that it starts out way too hot, but by the time I get back to it, it’s almost too cold. If there was ever a more perfect solution, I have yet to hear about it.

They appear to be large shiny coffee beans, but in reality they are food-grade stainless steel shells filled with a food-safe phase change material (PCM). The PCM is solid, but when you drop the Joulies in a cup of hot coffee, it liquifies (melting point 140F) and begins absorbing the heat and cooling your coffee to a reasonable drinking temperature. If that was all they did, I’d be excited. But wait…there’s more! As your coffee cools, the PCM starts to solidify again, releasing the stored heat back into your coffee and keeping it warm longer!

These are a concept right now, but the window is open for funding until May 2. You can pay as little as $1.00 US to support the project, or starting at $40.00 you can get a set of Joulies of your very own. The more you pledge, the more stuff comes with them, but the basic set is five Joulies in a cloth storage bag. Each Joulie is made to work with 5 ounces of volume, so put one in your double espresso, two in your mug, three in your tall coffee, four in your travel thermos, and five in your venti.

When they are available, they will retail for $50.00 US a set, so pledging your money now will get you a nice 20% discount. I’ve just ordered mine, and can’t wait until they get delivered at the end of June!

Source: The Gadgeteer

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