Description
It's difficult to believe that the adidas Ultraboost has passed the half-decade threshold. Naturally, the credit for revolutionizing running footwear is well deserved, but in running, and in technology, you can't move ahead if you're standing still or looking backwards.
The Ultraboost 21 offers the most advanced combination of Boost, Torsion and Primeknit to date. A 6% increase in the amount of Boost...