Adidas ZX 1K Boost Seasonality Shoes. The ZX line raised the bar in comfort and style. Now, it’s taking on cool weather with a winterized sole and suede overlays. Webbing eyelets. Lace up. Heel Tab. Reflective overlays. Textile lining. EVA foam and Boost technology. Winterized rubber outsole. 20% of pieces used to make the upper are made with a minimum of 50% recycled content. Imported.