NIKE Men's Free 5.0 Wlf Gry/Blck/Drk Gry/Mtllc Slv Running Shoe 10 Men US Mesh Made in USA Flywire technology for ultra-lightweight support Nike Free Phylite midsole doubles as an outsole for lightweight cushioning, durability and reduced weight Deep hexagonal flex grooves for a natural, barefoot-like ride No-sew overlays throughout provide support and durability without added weight