| Model | adidas UltraBoost 21 |
| Known as | "Cloud White" |
| Brand | |
| Release date | March 7, 2021 |
| Colorway | White |
| Colors | White, Gray |
| Style code | FY5391 |
| Rating | |
| Type | Original, General Release |
| Gender | Grade School |
| Sport | Lifestyle |
Added June 11, 2025 at 1:38:06 PM, Updated October 17, 2025 at 4:53:51 PM
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