The ZX series entered the scene in the '80s and took hold of running culture with its groundbreaking approach to speed. These adidas ZX 1K Boost Shoes might not be about performance anymore, but that doesn't mean they're slowing down. Forever forward focused, the progressive silhouette doubles up on comfort with a plush Boost and EVA midsole combo. The mesh upper is accented with synthetic overlays. This product is made with recycled content as part of our ambition to end plastic waste. 20% of pieces used to make the upper are made with minimum 50% recycled content.