In September 2015, during a Champions League game, Cristiano Ronaldo of Real Madrid scored two goals, with the second one being his 500th career goal. To commemorate this remarkable milestone, Nike introduced the 'Quinhentos' version of the Mercurial Superfly CR7 soccer cleat. This special edition cleat offers a barefoot-like sensation, thanks to the Flyknit yarn used in the sock-liner and tongue. The upper part of the cleat features a NikeSKIN design, which includes ACC technology to ensure a dry and grippy experience even in wet conditions.