Austrian designer's invention in line for a James Dyson Award...

A designer from Austria is hoping to win a James Dyson Award for his invention of a water bottle that refills itself.

While the invention could interest cyclists riding across continents or around the world, ensuring them a fresh supply of hydration, its primary use could come in regions where fresh water is hard to come by.

Kristof Retezár’s Fontus system attaches to the frame of a bicycle, and while it is moving, enables air to be funnelled over what is described as a “condensing structure,” reports the website City Lab.

The air is then turned into moisture through a “condensing structure,” which drips into a detachable PET bottle. It works best in humid, warm conditions, picked out in a darker shade of red in the map below.

Retezár says: “Fontus can be applied in two different areas. Firstly, it may be interpreted as a sporty bicycle accessory.

“Useful on long bike tours, the constant search for freshwater sources such as rivers and gas stations can cease to be an issue since the bottle automatically fills itself up.

“Secondly, it might be a clever way of acquiring freshwater in regions of the world where groundwater is scarce but humidity is high.

“Experiments suggest that the bottle could harvest around 0.5 L water in one hour's time in regions with high temperature and humidity values.”

Born in Scotland, Simon moved to London aged seven and now lives in the Oxfordshire Cotswolds with his miniature schnauzer, Elodie. He fell in love with cycling one Saturday morning in 1994 while living in Italy when Milan-San Remo went past his front door. A daily cycle commuter in London back before riding to work started to boom, he's been news editor at road.cc since 2009. Handily for work, he speaks French and Italian. He doesn't get to ride his Colnago as often as he'd like, and freely admits he's much more adept at cooking than fettling with bikes.