The adidas NMD S1 Metallic Pack Grey is a sneaker model from adidas that features a metallic grey colorway. The upper of the shoe is made of a breathable mesh material, with synthetic overlays for added support. The metallic details can be found on the midfoot branding and on the heel tab. The shoe also includes the signature boost technology in the midsole for enhanced comfort and responsiveness. The NMD S1 Metallic Pack Grey is a stylish and versatile option for casual wear with its sleek design and metallic accents.