I hope they don't drop any more colorways
it's a cool thing for world cup 2014, these shoes were born from the flagship boot worn this year
first pair dropped day before the world cup started - also launched nikelab - first HTM on NDC
volt pair dropped day before world cup ended
"Notably, the shoe’s incarnation in glowing Volt—a key Nike performance color originally introduced in London in 2012—celebrates the electrifying finals of the summer’s seminal football tournament in Brasil."
-http://nikeinc.com/news/new-nike-free-mercurial-superfly-by-htm-in-volt