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Product Specifications


motion control


Crew Navy/Crew Navy/Core Black




12.1 Ounces (Size 9)

Item #


Style #


US sales only.

adidas Ultraboost 21 Men's Crew Navy/Crew Navy/Core Black

Unleash your energy in the adidas Ultraboost 21! This version takes all the original style components and combines them with the latest technology to provide comfort, support, and energy return. Slip into a soft Primeknit upper that perfectly blends comfort and structure. Every stride on the Boost midsole leads a lively ride to move you forward. The Adidas LEP torsion system increases forefoot bending stiffness for a more responsive run. When it comes to comfort and energy return, the adidas Ultraboost 21 reigns supreme!

What's New?

  • 6% more Boost capsules in the midsole provides the perfect mix of energy return and comfort.
  • Newly redesigned LEP torsion system provides runners with less flex in the forefoot and increased responsiveness.

Who's it for?

  • Neutral runners who crave a high-performance shoe that provides incredible responsiveness and ultimate comfort during short or long runs.
  • Fashion enthusiasts looking to improve their street style with a cool, comfortable shoe for casual use.

Shoe Technology

Upper: Primeknit upper wraps around the foot for a snug fit that supports movement. Made with recycled Primeblue material that contains at least 50% Parley Ocean Plastic for sustainability.

Midsole: Responsive Boost cushioning unleashes incredible energy return. LEP torsion system gives runners less flex in the forefoot for more responsiveness.

Outsole: Stretchweb outsole flexes naturally for an energized ride. Continental™ Rubber offers superior traction on wet and slick surfaces.