With Inter Milan’s crunch encounter with Manchester United just days away, Zlatan Ibrahimovic got the training ground delivery he’d been waiting for – and the one that United’s defenders had been dreading. To the untrained eye, it may look like an ordinary boot, but hidden beneath that prototype black paint job is the fastest footwear known to man: the Mercurial Superfly. Press play to see the boot’s journey from the finest raw materials all the way to the feet of the world’s fastest players.