An Austrian student has invented a device that turns moisture into water.

Kristof Retezar, an industrial design student from the University of Applied Arts, invented a self-filling water bottle that generates water as a bicycle travels by gathering moisture from the air.

Retezar, who's based in Vienna, named his gadget "Fontus." Fontus is the Roman god of wells and springs.

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Fontus was recently named a finalist for the 2014 James Dyson Award. It uses the principle of thermoelectric cooling in which an electricity-powered heat pump transfers heat from one side of a container to another.

Solar cells in Fontus cool the upper part of the bottle while the lower half is heated by the Sun. As this process occurs, the moisture inside the water bottle cools down and condenses as the air passes through the upper chamber. The moisture from the cooled air condenses into water and drips through a tube into the bottle.

"Firstly, it may be interpreted as a sporty bicycle accessory [that's] useful on long bike tours," Retezae said.

He added "it might be a clever way of acquiring freshwater in regions of the world where groundwater is scarce but humidity is high."

To test his product, Retezar tested Fontus in his bathroom whose temperature was at least 68 degrees Fahrenheit while the humidity stood at 50 percent. He found out his new self-filling bottle had limitations. It produces water at a very slow speed: a drop of water per minute.

Fontus, which can be attached to the bike frame, is currently in its prototype stage. It's being sold at $25 to $40.

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