Nike Mercurial World Cup football boots from 1998 to 2010
15 years with the Mercurial R9 - The original faces off with the heir
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.
Nike Mercurial Superfly IV Heritage iD FG Ronaldo R9 1998 World Cup US 11.5 | eBay
Nike Vintage NIKE 1998 Mercurial football boots R9 RONALDO EUR43 | Grailed