With a mission to design shoes for runners of all types, adidas unleashed their ZX collection in the 1980s. The adidas ZX 630 furthers the concept of the 600, which debuted in 1985 with rugged furnishing for off-road running. The upper of this blue-based model is crafted from lightweight mesh and suede overlays. For a stable ride, a TPU heel clip is added. An EVA foam midsole helps cushion each step, underscored by durable rubber tread.