A RACING SHOE WITH POWER. Nike Zoom Fly AW gives distance runners race-day comfort and durability. The power of a carbon fiber plate and responsive cushioning keeps you in the running mile after mile. Full-Length Cushioning. A full-length Nike React midsole balances cushioning and responsiveness with lightweight, durable foam that delivers an extremely smooth ride. The Look and Feel of FastA transparent upper evokes the look of fast, while the inner sleeve and a low collar conform to your foot in a racing fit.Propulsive Feel. A carbon fiber plate inside the midsole can shrink or expand for maximal flexibility in your stride. An arch band attached to laces helps take pressure off your instep. The heel angles away from your ankle to relieve pressure on Achilles tendon. The outsole features rubber on the forefoot and heel for added durability.