1 of 8
2021
UltraBoost 21 'Core Black'
The adidas UltraBoost 21 ‘Core Black’ applies a rudimentary palette to a performance running shoe that combines lightweight comfort with enhanced energy return. Recycled Primeblue materials, including Parley Ocean Plastic, goes into the construction of the knit upper, fortified with a midfoot cage and molded heel counte. An optimized Boost midsole, made with 6% more Boost capsules than the UltraBoost 20, features added responsiveness via a new Torsion system that adidas calls Linear Energy Push.
| Release Date | 01-29-2021 |
| SKU | FY0378 |
| Nickname | Core Black |
| Colorway | Core Black/Core Black/Grey Four |
| Main Color | Black |
| Upper Material | Primeknit+ |
| Technology | Boost |
| Category | Running |