Prototype after prototype. Innovation after innovation. Testing after testing. Meet us in the hot pursuit of the pinnacle harmonization of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return.
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Sock-like fit
Lace closure
adidas Primeknit+ textile upper
Boost midsole
Textile lining
Midsole drop: 10 mm (heel: 24.2 mm/forefoot: 14.2 mm)
