







adidas UltraBoost 21 'White Royal Blue' GX8532

The adidas UltraBoost 21 in White Royal Blue is a premium running shoe crafted by adidas. Featuring a clean white color with stylish royal blue accents, this shoe not only provides exceptional comfort and support but also elevates your style game. Whether you're hitting the track or running errands, the UltraBoost 21 White Royal Blue is the perfect choice for performance and fashion-forward individuals.
US M | US W | UK | EU | CM |
---|
3M | 4W | 2.5 | 35 | 21 |
3.5M | 4.5W | 3 | 35 1/2 | 21.5 |
4M | 5W | 3.5 | 36 | 22 |
4.5M | 5.5W | 4 | 36 2/3 | 22.5 |
5M | 6W | 4.5 | 37 1/3 | 23 |
5.5M | 6.5W | 5 | 38 | 23.5 |
6M | 7W | 5.5 | 38 2/3 | 24 |
6.5M | 7.5W | 6 | 39 1/3 | 24.5 |
7M | 8W | 6.5 | 40 | 25 |
7.5M | 8.5W | 7 | 40 2/3 | 25.5 |
8M | 9W | 7.5 | 41 1/3 | 26 |
8.5M | 9.5W | 8 | 42 | 26.5 |
9M | 10W | 8.5 | 42 2/3 | 27 |
9.5M | 10.5W | 9 | 43 1/3 | 27.5 |
10M | 11W | 9.5 | 44 | 28 |
10.5M | 11.5W | 10 | 44 2/3 | 28.5 |
11M | 12W | 10.5 | 45 1/3 | 29 |
11.5M | 12.5W | 11 | 46 | 29.5 |
12M | 13W | 11.5 | 46 2/3 | 30 |
12.5M | 13.5W | 12 | 47 1/3 | 30.5 |
13M | 14W | 12.5 | 48 | 31 |
13.5M | 14.5W | 13 | 48 2/3 | 31.5 |
14M | 15W | 13.5 | 49 1/3 | 32 |
14.5M | 15.5W | 14 | 50 | 32.5 |
15M | 16W | 14.5 | 50 2/3 | 33 |
16M | 16.5W | 15 | 51 1/3 | 33.5 |
17M | 17W | 16 | 52 2/3 | 34.5 |
18M | 17.5W | 17 | 53 1/3 | 35 |
19M | 18W | 18 | 54 2/3 | 35.5 |
20M | 18.5W | 19 | 55 2/3 | 36 |




Novelship employs a strict verification process where each product is unboxed to allow thorough inspection of the product, including the packaging, exterior appearance, interior components, and accessories. Defects and imperfections are flagged, and our authentication team determines the legitimacy of each product before final approval.
You are responsible for any return shipping costs. We will provide a return address after the request is confirmed by the Novelship Customer Specialist team.
Please contact our customer service team before returning any product. For further information, please refer to our Term and Conditions.
Requests for size exchanges can only be made within 30 days of the shipping date and are subject to availability.
Please contact our customer service team before returning any product.
For further information, please refer to our Term and Conditions.
The adidas UltraBoost 21 in White Royal Blue is a premium running shoe crafted by adidas. Featuring a clean white color with stylish royal blue accents, this shoe not only provides exceptional comfort and support but also elevates your style game. Whether you're hitting the track or running errands, the UltraBoost 21 White Royal Blue is the perfect choice for performance and fashion-forward individuals.




Novelship employs a strict verification process where each product is unboxed to allow thorough inspection of the product, including the packaging, exterior appearance, interior components, and accessories. Defects and imperfections are flagged, and our authentication team determines the legitimacy of each product before final approval.
You are responsible for any return shipping costs. We will provide a return address after the request is confirmed by the Novelship Customer Specialist team.
Please contact our customer service team before returning any product. For further information, please refer to our Term and Conditions.
Requests for size exchanges can only be made within 30 days of the shipping date and are subject to availability.
Please contact our customer service team before returning any product.
For further information, please refer to our Term and Conditions.


