Boost the ride. Ideal for streets and trails alike, the adidas Originals ZX 1K Boost raises the bar when it comes to running shoes. The midsole built with equal parts Boost and EVA allows seamless transitions, while the winterised outsole battles elements like you slay your excuses. The recycled mesh upper with iconic 3-Stripes and reflective details reflects your adidas pride even when you're putting in the work. adidas Originals ZX 1K Boost features: Upper contains a minimum of 50% recycled content. Knit upper with suede overlays and reflective underlays bring standout style. Textile lining adds soft comfort.