The Nike Flex 2017 RN is a performance running shoe made in women's sizes. With an easy, flexible fit, the lightweight style has a circular-knit construction that allows the foot to move naturally. Flywire cables integrate with the laces for dynamic lockdown, and a dual-density foam midsole provides lightweight cushioning. Sections of the rubber tread form a triangular pattern at high-wear areas to enhance durability. This Nike Flex RN 2017 comes in a classic and versatile black-and-white colorway.