The UltraBoost 21 ‘Grey Sonic Ink’ brings the UltraBoost 21 back in a Grey Five, Core Black and Screaming Green colorway. It pairs 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 August 2021.
The UltraBoost 21 ‘Grey Sonic Ink’ brings the UltraBoost 21 back in a Grey Five, Core Black and Screaming Green colorway. It pairs 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 August 2021.
| Brand | adidas |
|---|---|
| Color | Grey Five / Core Black / Screaming Green |
| Gender | men |
| 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 | Men's US 3, Men's US 3.5, Men's US 4, Men's US 4.5, Men's US 5, Men's US 5.5, Men's US 6, Men's US 6.5, Men's US 7, Men's US 7.5, Men's US 8, Men's US 8.5, Men's US 9, Men's US 9.5, Men's US 10, Men's US 10.5, Men's US 11, Men's US 11.5, Men's US 12, Men's US 12.5, Men's US 13, Men's US 13.5, Men's US 14 |
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