STUDIED TO RUN IN FREEDOM. The Nike Free RN Flyknit 2018 running shoe provides miles of comfort thanks to the structured Flyknit upper that provides more targeted elasticity and support than ever before. The motif on the sole adapts to the foot at every step for a dynamic run, from top to bottom. The structured upper in Flyknit offers breathability, elasticity and support. Dual-density midsole and tri-star outsole provide cushioning and flexibility. The dynamic heel is elastic for a snug and comfortable fit. The Flywire technology woven into the upper and integrated with the laces ensures a dynamic fit and ideal support on the medial area. Consistency has been added under the toe and heel to improve traction in these highly abrasive areas.