THE ELITE RACING POWERHOUSE. Continue the next evolution of speed with a racing shoe made to help you chase new goals and records. It helps improve comfort and breathability with a redesigned upper. From a 10K to a marathon, this model, like the previous version, has the responsive cushioning and secure support to push you towards your personal best. Still the Best Energy Return Yet Nike ZoomX foam delivers Nike Running\\\'s greatest energy return yet.A full-length carbon-fibre plate creates a responsive feel that keeps you moving through your stride. Breathable and Soft A redesigned upper uses mesh fabric placed in areas where you need breathability. The result is a softer, cooler design that contours to your foot. Secure Containment Reinforcement along the forefoot provides extra durability and secure comfort. More Benefits Internal foam pod at the heel gives you extra cushioning. Light padding on the tongue helps reduce lace pressure at the top of your foot. The laces loop through lightweight side supports that eliminate the need for an arch band, which helps reduce the shoe\\\'s weight. Wider toe area creates a roomier fit. Flexibility grooves on the sole give you multi-surface traction in a variety of weather conditions. Product Details World Athletics approved