Nike flex 2016 run girls running shoes the kids nike flex 2016 run running shoes are perfect for when your little one hits the track crafted with a moulded outsole that allows for the natural flex of the foot along with rubber inserts to key areas of the sole that provide extra durability to high wear areas and traction these nike running shoes also benefit from a knit upper that gives the shoes extra breathability while the cushioned insole with the lace up front give a secure and comfortab