Nike Mens Flex Run 2017 Adaptive & supportive, the Nike Flex Run 2017 is the ultimate running shoe that flexes with your every move. These navy blue running shoes deliver the perfect balance of comfort & natural movement through its one- piece upper, resilient heel design & tri-star outsole pattern, designed to expand & contract naturally with your foot. The Nike Flex Run is a natural shoe, ideal for neutral foot types & under-pronators. Product Features One- piece mesh upper offers lightweight support & breathability Co-moulded midsole offers resilient cushioning for a smooth stride every time Outsole features hexagonal flex grooves to promote natural motion & flexibility Supportive Flywire cables integrate with the laces for a dynamic yet stable fit Minimal rounded heel for a smooth transition with each heelstrike, size 6