3D printing has proven to be useful across many different areas, including the creation of lifestyle products for consumers. Adidas, for one, began toying with the idea of 3D-printed footwear in recent years, which led to the introduction of its Futurecraft 3D concept in 2015. But the German sportswear company doesn't want to stop there. Today, it announced that it will be selling a 3D-printed running shoe for the first time, albeit in limited-edition form. Not to crush your enthusiasm early on, but these are going to be hard to get.