Description A favourite of keen runners and those who just want a comfortable shoe, the Nike Free RN 2018 has been updated to deliver an even more comfortable and adaptive fit. The Nike Free RN 2018 Women's Running Shoes are constructed with a flexible spandex circular-knit upper to deliver a light breathable and fit that flexes with your foot for natural movement. The new dynamic heel fit system utilises a wide stretchy strap and tall comfort collar to support the heel and ankle. The fit is further enhanced in the midfoot thanks to the Flywire cables that integrate with the laces for better lock-down. An amazing underfoot feeling comes thanks to the injected Phylon core foam and IU carrier foam for a smooth ride. The auxetic tri-star pattern in the outsole and minimal sockliner work to promote a natural foot splay for a balanced and natural feel and range of motion. Circular knit upper is constructed from spandex for a light and flexible fit Dynamic fit thanks to Flywire cables linking with laces in the midfoot and stretchy dynamic heel fit system Extended tongue wraps the foot for a secure feeling Midsole utilises injected Phylon core foam and injected unit sole carrier foam for a smooth ride Minimal sockliner mimics the curve of the foot for enhanced support Auxetic tri-star outsole pattern adapts to your step for flexible cushioning Texture added to toe and heel for enhanced traction Features Spandex circular-knit upper for natural movement Dynamic heel fit system supportsfrom heel to ankle Flexible cuhioning thanks to the Tri-star outsole