nike wmns free rn flyknit 2018 raspberry red/white/teal tint/womens 942839 600 - size 8.5w nike engineered to run freely. nike free rn flyknit 2018 women's running shoe brings you miles of comfort with a flyknit constructed upper that delivers even more zoned stretch and breathability than before. the outsole pattern adjusts to your every step for a dynamic ride, top to bottom.