Nike Flex 2016 Running Shoe is built to flex. Its one-piece engineered mesh upper, co-molded midsole and molded tri-star outsole pattern work together that moves with your stride. The articulated 2-piece Nike Flex sole ensures a more natural running experience,  the asymmetrical upper with Breathe Tech construction offers unmatched breathability

UPPER: Mesh with synthetic overlays and Breathe Tech construction
MIDSOLE: Phylon foam
OUTSOLE: Articulated 2-Piece Nike Flex Sole