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.
- Weight: 12 oz
- Midsole drop: 0.4 in (heel 1.2 in / forefoot 0.8 in)
- Stretchweb outsole with Continental™ Rubber
- Primeblue
- Lace closure
- adidas Primeknit+ upper
- Supportive heel counter
- Boost midsole























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