Nike's Flash Collection offers water-repellent uppers and 360-degree reflectivity throughout for the perfect protection when running in wet, dark conditions. Lightweight mesh upper combines with dynamic Flywire technology for a breathable and secure lock down, while a seamless inner booty gives a plush and comfortable fit. Phylon midsole with flex grooves that allow the foot to move naturally in multiple directions. Flex pattern offers six directions of motion for the most flexible outsole to date. Strategically placed rubber lugs for added durability. Wt. 8.8 oz.