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Purchase details
Fit & sizing
Review the product details for sizing information. View size guide
Condition
See the product description for item-specific details.
Delivery
U.S. shipping.Shipping policy
Returns
30-day returns. Return shipping is paid by the customer.Return policy
Product details
The Ultraboost 21 brought more Boost and a more stable ride to the line. A snug, sock-like upper hugs the foot, and a firm plastic insert under the midfoot helps keep each stride steady and smooth.
Key features
- Generous Boost midsole for plush, energetic cushioning
- Sock-like knit upper for a close, comfortable fit
- Midfoot support system for a steadier stride
- Rubber outsole with strong grip in wet and dry conditions
Fit & sizing
US sizes 4 through 9.5 in half sizes, medium width. Fits snug through the midfoot; size up a half if you're between sizes.
Best for
Daily runs, long walks and anyone who wants maximum cushioning.
