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2021
UltraBoost 21 'Crystal White Hazy Green'
The adidas UltraBoost 21 ‘Crystal White Hazy Green’ spotlights the running shoe’s full-length Boost midsole with a metallic iridescent finish. The responsive cushioning technology is reinforced underfoot by adidas’ Linear Energy Push torsion system and a Stretchweb Continental rubber outsole. Up top, breathable Primeknit construction in Crystal White features recycled Parley Ocean Plastic and zero virgin polyester. A molded heel counter in Hazy Green offers rearfoot stability.
| Release Date | 04-17-2021 |
| SKU | FY0383 |
| Nickname | Crystal White Hazy Green |
| Colorway | Crystal White/Crystal White/Hazy Green |
| Main Color | White |
| Upper Material | Primeknit |
| Technology | Boost |
| Category | Running |