Nike Free FlyKnit+ - Women'sBlending a sock-like fit and the foot-strengthening benefits of barefoot running, the Nike Free Flyknit+ promises to deliver a running experience like no other. The comfortable one-piece upper offers a smooth, seamless design and features Flyknit technology that wraps the foot for a secured fit, reducing foot slippage. Built with a lightweight Phylite™ midsole, this performance running shoe lightens and cushions your step to help you run faster and longer. Flex grooves throughout the midsole allow unbelievable flexibility that offers a more natural running motion. Durable BRS 1000 carbon rubber outsole showcases waffle pistons to soften impact and efficiently return energy to your run. The FREE Flyknit offers a truly revolutionary fit. For optimal performance, Nike recommends a true-to-size fit, but personal preference may require you to move up a half size. Wt. 7.6 oz.