Mens Size 4 / 5.5W Nike Alpha Fly 2 Running Shoes Crimson 。•Atomknit material on the upper has a contoured fit while being lightweight and super-breathable •An integrated knit tongue with lofted padding make for a secure, repeatable fit that helps reduce lace pressure •Notched laces offer a secure, but soft lace-up •Reflective details •Full-length carbon fiber plate gives a propulsive sensation and helps you smoothly transition through your stride •Full-length ZoomX foam offers an ultra-lightweight and responsive ride •2 forefoot Zoom Air units and full-length ZoomX foam deliver Nike®’s highest energy return cushioning system Comes with Nike Drawstring bag. Please review all photos to ensure the best fit and wear. Actual colors may vary slightly due to lighting. Feel free to ask any questions before purchasing!