Nike - Men's ReactX Infinity Run4How to choose your size Snug fit; we recommend ordering a half size up. Product Features Low cut performance running sneakers designed for more miles outdoors Updated Flyknit material delivers remarkably lightweight and breathable support Flyknit tongue is easily adjustable and secured by a lace up closure Water repellent liner on the toe helps keep you dry when the weather turns Curved outsole helps your foot for smooth transitions and added