Prototype after prototype. Innovation after innovation. Testing after testing. Meet adidas in the hot pursuit of the pinnacle harmonisation of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return.
Prototype after prototype. Innovation after innovation. Testing after testing. Meet adidas in the hot pursuit of the pinnacle harmonisation of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return.