Nike Free RN Flyknit 2017 Women's Running Shoes / Black / Black / Dark Grey / White

INCREDIBLY FLEXIBLE. NATURAL FIT. The Nike Free RN Flyknit 2017 Women's Running Shoes brings you miles of comfort with an exceptionally flexible outsole for the ultimate natural ride. Flyknit fabric wraps your foot for a snug, supportive fit while a tri-star outsole expands and flexes to let your foot move naturally. Benefits Near-seamless Flyknit upper provides an incredible fit and support Tri-star outsole pattern expands to let your foot move more naturally Foam midsole doubles as an outsole to deliver lightweight cushioning Flywire cables integrate with the laces for midfoot lockdown Rounded, anatomical heel rolls with the ground for natural movement Product Details Weight: 180 grams approx. (women's size 5.5) Offset: 8mm Nike Free Origins After learning that Stanford athletes had been training barefoot, three of Nike's most innovative and creative employees set out to develop a Shoes that felt natural and weightless, similar to bare feet. The team spent four years studying the biomechanics of runners' feet in motion. The results yielded a profound understanding of the foot's natural landing angle, pressure and toe position, allowing Nike designers to build an unconventional and flexible running Shoes from the inside out. Flyknit Origins Nike Flyknit technology was inspired by feedback from runners craving a Shoes with the snug (and virtually unnoticed) fit of a sock. Nike embarked on a four-year mission with teams of programmers, engineers and designers to create the technology needed to make the knit upper with static properties for structure and durability. Then the precise placement of support, flexibility and breathability—all in one layer—was refined. The result is a featherweight, form-fitting and virtually seamless upper.