Remembering R9's World Cup Boots: 1998 – 2006 - SoccerBible
Nike celebrate 15 years of Mercurial and recreate the R9 boot
Nike Mercurial Superfly IV Heritage iD FG Ronaldo R9 1998 World Cup US 11.5 | eBay
SoccerBible on Twitter: "Remembering @Ronaldo's World Cup boots: 1998-2006. Three tournaments, five iconic Nike Mercurials, fifteen goals. The most electric striker the world has ever seen. https://t.co/nVFjx0jqN7" / X
Ronaldo and the Nike Mercurial R9's | The Football Fanzine
Ronaldo unveils 1998 World Cup throwback boots to hail 20th anniversary of Nike's Mercurial | The Sun
Brazil legend Ronaldo unveils stunning World Cup 1998 throwback boots to celebrate Nike's 20th Mercurial anniversary - Mirror Online
Nike Mercurial World Cup football boots from 1998 to 2010
Nike celebrate 15 years of Mercurial and recreate the R9 boot