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2021
UltraBoost 21 'Carbon Solar Red'
The adidas UltraBoost 21 ‘Carbon Solar Red’ spotlights the running shoe’s full-length Boost midsole with a metallic gunmetal finish. Underfoot, the Continental rubber outsole is equipped with adidas’ updated Torsion system, dubbed Linear Energy Push. The black and Carbon Primeknit upper, made in part with recycled Parley Ocean Plastic, hugs the foot in a sock-like fit. Lightweight support is provided by a smoky midfoot cage and a silver translucent heel counter. An adidas-branded tongue tag in Solar Red delivers an unexpected pop of color.
| Release Date | 06-11-2021 |
| SKU | FY3952 |
| Nickname | Carbon Solar Red |
| Colorway | Carbon/Carbon/Solar Red |
| Main Color | Grey |
| Upper Material | Primeknit |
| Technology | Boost |
| Category | Running |