The Nike Free 4.0 Flyknit is the next generation of natural motion comfort. By removing the lateral seam, its one-piece upper conforms to your foot and moves with the integrated Flywire cables for an incredibly adaptive fit. The shoe encourages natural footstrike with a lower-profile cushioning and rounded heel.
The Flyknit 4.0 is more flexible than the 5.0 and more cushioned than the 3.0 and unleashes your natural stride with a lightweight, supportive Flyknit upper and a flexible, low-profile outsole.The Flyknit upper is a one-piece layer made entirely of polyester yarn and the knit-in Flywire cables cradle the midfoot for enhanced support.
With a 6mm difference between heel and forefoot height, the Nike Free 4.0 Flyknit gets you closer to the ground while still offering a great blend of cushioning and support.
Nike Flyknit Origins
Nike Flyknit technology was inspired by feedback from runners craving a shoe with the snug (and virtually unnoticed) fit of a sock. The result is a featherweight, form-fitting and virtually seamless upper.
Nike Free Origins
The Nike employees grasped a strong understanding of the foot's natural landing angle, pressure and toe position which allowed Nike designers to build an unconventional and flexible running shoe from the inside out. Since Nike Free's introduction, millions of runners have trained in the shoe, including some of Kenya's world-class runners.Features Include:
- Hexagonal flex grooves let your foot move naturally.
- Lower-profile cushioning rounded heel encourage natural footstrike.
- Strong lightweight Flyknit upper provides contoured supportive fit.
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