Shaft measures approximately low-top from arch RUNNING SHOES FOR MEN: The Flex Experience RN 8 running shoe delivers lightweight comfort with a knit fabric that conforms to your every step. COMFORTABLE FIT: Men’s shoes feature flex grooves in the outsole for natural flexibility and a soft mesh in the heel for an adaptive fit while running. DURABLE DESIGN: A no-sew overlay at the laces and toe tip adds durability to our men’s running shoes while textured outsole provides additional traction and durability. RESILIENT RIDE: Injected unit sole midsole provides a resilient ride and enough durability to double as an outsole. This allows for a reduction in rubber and overall weight on your running shoes. RUN FREELY: Hexagonal flex grooves offer 6 different flex points for running freely in your Nike running shoes and the rounded heel rolls with the ground, promoting a natural range of motion.