Nike Men's Flex RN 2018 Adaptive & supportive, the Nike Flex RN flexes naturally with your every move. These dark blue running shoes deliver the perfect balance of comfort & natural movement. Built with a stretchy circular knit upper, dynamic heel design & tri-star outsole pattern that expands & contracts naturally with your foot. Finished with a bright white Nike Swoosh for an iconic look. Product Features Circular knit upper provides stretch & support Dynamic Flywire cables integrate with the laces for a stable fit Co-moulded midsole uses soft & firm foam for softness & support Tri-star outsole has hexagonal flex grooves to enhance flexibility Minimal heel design secures the back of your foot, size 11