Nike Flyprint: The 3D printed shoe to propel Kipchoge and Farah to London Marathon greatness

The new shoe is actually a variant of the shoe he wore for the Breaking2 event that saw him run the 26.2 miles in 2:00:25. But features a brand new upper design that has been 3D printed rather than weaved using Nike's popular Flyknit technology. "We've always used 3D printing to refine the design, but ...