Nike said the boot is inspired by Ronaldo's lightning speed and effortless style off the pitch, while the design is also a retro nod to a Safari style made famous in the 80s. 

The sportswear giants originally introduced the print on the Air Safari running shoe in 1987, when trailblazing Nike designer and father of the Air Jordan series Tinker Hatfield began exploring non-traditional materials, patterns and colours to use in athletic footwear and conceived the now legendary ostrich-skin print. 

The limited-run Air Safari quickly sold out and gained an ardent following for its striking design. Now the iconic print is back - this time on the feet of one of the best players in the world. 

Ronaldo's signature CR Mercurial Vapor SuperFly II represents the first time the print has been applied to performance football footwear. 

The boots also feature NIKE SENSE - an adaptive traction system where designers created a pair of adaptive studs in the forefoot that can extend and retract by up to 3mm, based on ground conditions and pressure exerted by the player. 

Directionally positioned blades maximize cutting and allow for quick changes of direction, while secondary toe traction provides added toe-off power for those first critical steps. Nike claim the result is a boot that enables greater speed in all directions. 

"The CR Mercurial Vapor SuperFly II makes a statement on pitch and the Safari print expresses my style," said Cristiano Ronaldo. "Combined with incredibly light and responsive performance the boot gives me everything I need to elevate my game." 

Ronaldo will debut the CR Mercurial Vapor SuperFly II on the pitch on November 7 during "El Derbi" which features Madrid's premier football teams - Real and Atletico.