A London department store now stocks what might be the ultimate toy for grown-ups - a flying jet suit.
Despite a hefty price tag, both Selfridges and the suit's designer are confident sales are about to take off.
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Former Marine Richard Browning quit his day job to build the suit, which can reach speeds of 51km/h and an altitude of 12,000 feet.
Five mini jet engines - one on the back and two on each arm - control the suit's direction, although the fuel pack means it can only fly for a few minutes at a time.
"It's almost like that dream most people seem to have around being able to just think somewhere and fly there," Mr Browning told CBS.
"In a strange way, it's a bit like riding a bike."
The suit shares some key similarities with the one worn by Tony Stark in the superhero Iron Man films.
"Actually what the guys had done, to think up that character and then do all the CGI around it, was actually quite accurate," Mr Browning says.
Retailing for a cool US$450,000 (NZ$662,000), the suit is currently on display at the Selfridges department store in London.
Mr Browning says he can see some practical uses for his invention in the future.
"For niche military applications and niche search and rescue applications, it turns out we do have some capability that they didn't think was possible."