Nike Mens Flex Run 2017 Adaptive & supportive, the Nike Flex Run 2017 are the ultimate running shoes made to flex with your every movement. This black & blue shoe delivers a perfect balance of comfort & natural movement through its one- piece upper, resilient heel design & tri-star outsole pattern made 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 & support for a smooth stride Outsole features hexagonal flex grooves to promote natural motion & flexibility Flywire cables integrate with the laces for a dynamic, supportive fit Minimal rounded heel for a smooth transition with each heelstrike, size 12