Ronaldo of Brazil sports his Nike R9 boots in the World Cup group A... News Photo - Getty Images
Mercurial Mk1 - The Original R9 - SoccerBible
Nike Have Released A Tribute To The Iconic Mercurials Wore By Ronaldo In 1998 - SPORTbible
Nike Mercurial Vapor Match FG R9 Ronaldo Black Blue Football Soccer Cleats US9.5 | eBay
Nike Mercurial 1998 R9 Black White FG – Classic Soccer Cleats
Nike Mercurial World Cup football boots from 1998 to 2010
I believe these are the mercurial r9 from 1998. I remember having a pair with the same colorway but without cleats. For indoor soccer I believe but can't find any info online.