The adidas ZX 700 'Blast Purple' updates the classic 80s runner with a bold color-blocked upper. adidas' ZX line debuted in the 1980s with a mission to create shoes for all different kinds of runners. This rendition includes the biometrically sound design that debuted with the original ZX 700, offering a natural, harmonious feel through the motions of running. A foam midsole and rubber outsole help promote comfort and grip.