ADIDAS UltraBoost 21 'Core Black'

The UltraBoost 21 'Core Black' is a modern performance runner with a classic two-tone look. The shoe's upper is built with Primeblue, made in part with Parley Ocean Plastic, finished in Core Black and supported by a tonal lacing cage and external heel counter. Underfoot, a white Boost midsole, incorporating 6% more Boost capsules than its predecessor, provides cushioning and contrast, working with the updated Torsion system known as Linear Energy Push for responsiveness.