Dressed in Core Black and Grey Four, the UltraBoost 21 ‘Core Black’ is a fresh take on the adidas UltraBoost 21. The design combines a Primeknit+ upper made for the road with Boost cushioning underfoot. Finished with a classic lace-up closure and a durable rubber outsole. This colorway released in January 2021.
Dressed in Core Black and Grey Four, the UltraBoost 21 ‘Core Black’ is a fresh take on the adidas UltraBoost 21. The design combines a Primeknit+ upper made for the road with Boost cushioning underfoot. Finished with a classic lace-up closure and a durable rubber outsole. This colorway released in January 2021.
| Brand | adidas |
|---|---|
| Color | Core Black / Core Black / Grey Four |
| Gender | women |
| Silhouette | UltraBoost 21 |
| Occasion | running |
| Upper Material | Primeknit+ |
| Technology | Boost |
| Closure | Lacing |
| Sole Material | Rubber Sole |
| Upper | Low Top |
| Toe Type | Round Toe |
| Thickness | Regular Sole |
| Size | Women's US 4, Women's US 4.5, Women's US 5, Women's US 5.5, Women's US 6, Women's US 6.5, Women's US 7, Women's US 7.5, Women's US 8, Women's US 8.5, Women's US 9, Women's US 9.5, Women's US 10, Women's US 10.5, Women's US 11, Women's US 11.5, Women's US 12, Women's US 12.5, Women's US 13, Women's US 13.5, Women's US 14, Women's US 14.5, Women's US 15 |
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