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.
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.
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.
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.
Last updated at 03/21/2026 20:42:26
adidas Ultra Boost 21 Grey Sonic Ink
Delivery $34.95
adidas UltraBoost 21 'Grey Sonic Ink' | Men's Size 10
Delivery between 23–30 Mar $25
| Release Date | 08-31-2021 |
| Nickname | Grey Sonic Ink |
| Colorway | Grey Five/Core Black/Screaming Green |
| Upper Material | Primeknit |
| Technology | Boost |
adidas Ultra Boost 21 Grey Sonic Ink
Delivery $34.95
adidas UltraBoost 21 'Grey Sonic Ink' | Men's Size 10
Delivery between 23–30 Mar $25
| Release Date | 08-31-2021 |
| Nickname | Grey Sonic Ink |
| Colorway | Grey Five/Core Black/Screaming Green |
| Upper Material | Primeknit |
| Technology | Boost |
