The Nike Free RN Flyknit 2017 offers ultimate comfort, letting the natural motion of a runner’s foot dictate every stride. Built to last for miles of running, the Flyknit-constructed upper delivers stretch and support. The Flywire cables give the foot a lightweight, locked-down fit. Designed with a muted color palette, the Flyknit upper is equipped in grey with a matching foam sole and Nike Swoosh. The outsole of the Nike Free RN Flyknit 2017 has a Tri-star pattern that enhances flexibility.