Adidas has been experimenting with 3D printing as a way of making shoes for a while. Only now can you actually buy a pair. Being released exclusively through Adidas Confirmed in New York, the Adidas 3D Runner is an all-black look at the future of footwear. It has an engineered 3D structure that's more dense in high-stress areas and less dense in others for optimal performance and weight, and is paired with a 3D printed heel counter integrated into the midsole and a black Primeknit upper. In the future, the company hopes to match the 3D structure to your own personal footprint, but until then, these will do nicely.