The adidas Ultra 4D ‘OG’ borrows a familiar color scheme initially featured on the UltraBoost release from 2015. This pair replaces the signature Boost cushioning of the original with a futuristic adidas 4D midsole, using a lattice structure made with a blend of liquid resin, light and oxygen. Up top, a matching black knit build is reinforced with a tonal midfoot cage and contrasting purple heel counter marked with Ultra 4D branding. NEW WITHOUT BOX