Nike Men's Free Flyknit Mercurial Running Shoes The Nike Free Mercurial Superfly Men's Shoe remasters Cristiano Ronaldo's signature shoe for the street with a flexible Nike Free sole and a fiery colorway inspired by the volcanic island where the soccer great grew up. Flyknit upper with leather overlays for ultra-lightweight support Flywire cables for lightweight support and an adaptive fit Outsole flex grooves for more natural movement Strategically placed rubber pods for durability in high-wear areas