Nike ZoomX Streakfly Mens Running ShoesNike ZoomX Streakfly Mens Running Shoes is one of the lightest produced by Nike, aimed at allowing you to take on the competition in 5 and 10K races with a full length ZoomX midsole providing the ultimate in lightweight responsiveness with an ultra-thin knit upper that's super sleek with additional reinforcement in the forefoot for a lockeddown, secure fit.