Nike Flex Speed - Women'sIf being fit and fast was illegal, the Nike Flex Speed running shoe would be your partner in crime. Featuring Nike's Flywire technology, this performance running shoe has cables that gently wraps and smoothly secures the foot for a snug, comfortable fit. This prevents foot slippage and keeps you focused on your fitness. Not only does the Phylon™ midsole cushion your step, it also absorbs impact energy and releases it on toe-off to propel you forward. The Phylite™ outsole has an ultra-light design and a reliable grip that'll help you set a new personal best. Wt. 6.6 oz.