Stay cozy while killin it in these core black/solar red adidas Ultra Boost Climas. This new colorway on the insanely popular Ultra Boost silhouette contrasts with the White/Solar Yellow pair released on the same day. The knitted upper is covered in black, accented with lime green and solar red hits all over. Finishing details include a matching heel counter, Boost midsole, rubber outsole, and Clima technology. This UltraBoost Clima ‘Core Black’ features innovative ClimaCool tech with Solar Red and green threading throughout a black Primeknit upper. Adapted for warm weather, the moisture-wicking material keeps the foot cool, while an energy-returning Boost midsole and Stretchweb outsole provide enhanced responsiveness.