Bryan Byrne on Twitter: "The Mercurial Vapor I, which Ronaldo debuted in "Silver Chrome, Black and Volt" during the summer of 2002, featured a number of firsts. It was Nike's first sub-200
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Remembering R9's World Cup Boots: 1998 – 2006 - SoccerBible
The Ronaldo 1998 Mercurial Boots Are Getting A Reboot - SPORTbible
Ronaldo and the Nike Mercurial: A look back at the perfect player & boot combination