Walking boots fitted with tiny combustion engines are set for production in Russia.
Inventor Viktor Gordejev, from Ufa in the Ural Mountains, says the boots cut the energy of walking by about 70%.
As soon as the wearer steps forward with one foot, the engines propel the other one forward.
Mr Gordejev says inspiration came 30 years ago when he was serving in the Soviet army.
He explained: “I always wished my boots had engines as we had to walk miles every day. That’s how I came up with the idea.”