Fusing cutting-edge form with function, Nike has united two trademark innovations: revolutionary compressive Nike Flyknit uppers and flexible Nike Free outsoles. Fit to fly, the Nike Free Flyknit offers the ultimate ride.

To celebrate the global Nike Free Flyknit retail launch on Aug. 1, Nike has created the limited-edition Nike Free Flyknit City Collection. Featuring London-, Tokyo-, Paris- and Shanghai-themed shoes, the designs highlight key running cities that are home to Nike Running Crews.

A virtually seamless second skin, Nike Flyknit was introduced in 2012, when it redefined the creation of footwear. By knitting support, stretch and structure directly into sock-like uppers, it provides a precise fit and extremely lightweight feel. The new generation of Nike Flyknit adds even more elasticity to secure the foot directly over the midsole, with an alternating tighter and looser knit for a 360-degree lockdown. The bootie-constructed heel further evolves the shoe by snugly securing the ankle to eliminate slippage.

The Nike Free outsole complements the upper by delivering all the benefits of natural motion. Originally launched in 2001, the Nike Free articulated outsole allows the foot to flex and stretch, just like it would on its own. When combined with the Nike Flyknit upper, this progressive innovation provides the most natural ride.