Nike flex 2016 run junior boys running shoes the kids nike flex 2016 run running shoes are perfect for when your little one next hits the track designed with a super flexible outsole with durable rubber inserts to the heel and toe for added traction while the cushioned insole and lace up front provide a secure and comfortable fit these nike running shoes also benefit from a knit upper that enhances the breathability of the shoes completed with the nike swoosh to the sides kids runnin