UltraBoost 21 'White Solar Yellow'

TheUltraBoost 21 ‘White Solar Yellow’ presents an elemental white and black Colorway : of the performance runner enlivened with fluorescent streaks of color. In comparison to the UltraBoost 20, this pair adds 6% more Boost cushioning and a new Torsion system that yields a 15% increase in forefoot stiffness for a more responsive run. Up top, a breathable Primeknit upper delivers sock-like comfort. Primeblue construction, featuring recycled Parley Ocean Plastic, maintains adidas’ sustainability efforts.