The Nike Free Run in it's three generations to date have undeniably changed the running game. The Free Run+ 4 retrains the simplistic design of its predecessors. The biggest revelation this time around would certainly have to be the addition of dynamic Flywire as seen on the upcoming Lunaracer+ 3. So, barefoot runners and Free spirits, what do you think of the Nike Free Run+ 4? Pictures via Zazzin.