Nike Flex RN 2018 Boys' Running Shoe (3.5y-7y) CONNECT TO YOUR RUN. Top to bottom, Nike Flex RN 2018 Boys' Running Shoe (3.5y-7y) is built to flex. Its circular-knit upper stretches in key areas, while the dynamic heel design and molded tri-star outsole pattern work together for an adaptive ride that connects you to your run.
Circular-knit upper provides strategic stretch and support. Dynamic Flywire cables provide a 1-to-1 fit. Tri-star outsole pattern enhances flexibility. Hot-knife cuts throughout enhance flexibility. Rubber is placed in high-wear zones for added traction and durability. Traditional tongue construction cushions lace pressure. Grade school size range: 3.5y-7y