Open-hole mesh upper provides a breathable and comfortable fit Dual-density midsole for extra comfort, flexibility, and durability Deep flex grooves promote multidirectional flexibility Rubber pods at the toe and heel provide durable traction Run in comfort with the Nike Flex RN 2017 (GS) running shoe from Nike. With an open-hole mesh upper to provide a comfortable fit with breathability, a grooved dual-density foam sole to make the shoe flexible, and increased traction; these trainers are ideal for running at school or for leisure.