The future is here.
At first glance, the 4:01.44 indoor mile that Jack Bolas ran in New York doesn’t seem like that big a deal. But the real story wasn’t his fourth-place finish; instead, it was the fact the four-time All-American was the first professional athlete to run a race in 3-D printed equipment.
Specifically, the spike plates on the shoes Bolas wore in January were created by New Balance after a long research-and-development process focused on ensuring the shoes met his individual needs.
http://www.wired.com/playbook/2013/03/new-balance-3d-printed-shoes/