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Nike are unveiling the shoes made famous in Back to the Future, part II.
Nike will auctioning 1500 pairs on eBay with the proceeds going to the Michael J. Fox Foundation.
The actor, who played Marty McFly in the 1989 Sci-Fi classic, has Parkinson's and his charity funds research into the disease.
In the film Marty comes across the Nike trainers in 2015, which automatically laced themselves, although reports suggest, unfortunately, that won't be a feature on the upcoming model.
Nike said: "The Nike Mag is no longer 'the greatest shoe never made'. The mythical shoe that captured the imagination of audiences is being released."