Complex's weekly series Don't Believe the Hype takes a look at what's hot and what's just hot air. Sneakers, clothes, tech, food—nothing is safe. This week Speedy checks out the new 3D printed adidas ...

Adidas's Futurecraft 4D, a winner in the 2017 Innovation By Design Awards, is the first 3D-printed running shoe to deliver on the promise of mass customization. But it hasn't been easy getting here.