The UltraBoost ‘Grey White Blue’ showcases iridescent blue detailing on the signature three-stripes and molded heel counter. Along with red adidas branding on the tongue, those accents bring added flash to an otherwise neutral design, highlighted by a breathable Primeknit upper in subdued Dash Grey. Responsive cushioning comes courtesy of a full-length Boost midsole, which rides on a black Continental rubber outsole for grippy traction.