Adidas Futurecraft 3DPrinted shoe

*I'd probably wear one, but what the heck is that thing made of? Smelting a granular substance that people can run on is no picnic.

http://news.adidas.com/US/Latest-News/adidas-breaks-the-mold-with-3d-printed-performance-footwear/s/8099a318-f9e7-45d8-9887-42c3dde5e6fd