warm-lined with a rubber outsole

this shoe offers ultimate comfort and support

An Air Zoom unit at the forefoot is twice as large as previous versions

simple and durable design that will last you for years

0 is designed with a ground-gripping outsole

adidas ultraboost 21 w ftwwht cblack solred 300678-BPZ warm-lined with a rubber outsoleEnergy was just energy until energy met Ultraboost 21. 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. Sock like fit Lace closure adidas Primeknit+ upper Textile lining Supportive heel counter Boost midsole