If you had to decide between style and innovation, which would you choose? Silly question. You shouldn't have to make a decision like that. Just lace up in these adidas ZX 5K Boost Shoes and be done with it. Built on the innovative spirit of the ZX design code, they have a full-length Boost midsole wrapped in translucent tooling. Suede overlays and reflective details accent the mesh upper for style that shines.