1 of 8
2021
UltraBoost 21 'Grey'
The adidas UltraBoost 21 ‘Grey’ applies a monochromatic neutral finish to the lightweight and responsive performance running shoe. The sneaker’s breathable knit build, incorporating recycled Primeblue materials that include Parley Ocean Plastic, sits atop full-length Boost cushioning that packs 6% more Boost capsules than the UltraBoost 20. Underfoot, a revised Torsion system dubbed Linear Energy Push yields improved forefoot stiffness and energy return.
| Release Date | 01-28-2021 |
| SKU | FY0381 |
| Nickname | Grey |
| Colorway | Grey Three/Grey Three/Grey Four |
| Main Color | Grey |
| Upper Material | Primeknit+ |
| Technology | Boost |
| Category | Running |