Adidas Ultraboost 23 vs Nike Dunk Low Sizing
Adidas Ultraboost 23 vs Nike Dunk Low: side-by-side fit, toe-box width and the exact size to order in each — Nike Dunk Low runs bigger. Free interactive sizing comparison.
Should you size down from the Adidas Ultraboost 23 to the Nike Dunk Low?
Yes — size down a half size. If you wear a US 10 in the Ultraboost 23, order about a US 9.5 in the Dunk Low.
How they compare
Adidas Ultraboost 23 → Nike Dunk Low: The Adidas Ultraboost 23 runs true to size and has a slightly wider toe box compared to the Nike Dunk Low. If you wear a US 10 in the Ultraboost 23, your target size for the Dunk Low is US 9.5.
Nike Dunk Low → Adidas Ultraboost 23: The Nike Dunk Low runs about a half-size large and has a slightly narrower toe box compared to the Adidas Ultraboost 23. If you wear a US 10 in the Dunk Low, your target size for the Ultraboost 23 is US 10.5.
Spec comparison
| Spec | Adidas Ultraboost 23 | Nike Dunk Low |
|---|---|---|
| Length Fit | True to Size | Runs Large (~½ size) |
| Toe Box Profile | Wide | Standard |
| Arch Support | High | Low / Flat |
| Upper Material | Primeknit Textile | Leather |
Size conversion: Adidas Ultraboost 23 → Nike Dunk Low
If you wear these US sizes in the Ultraboost 23, here is the size to order in the Dunk Low.
| Your US size in Ultraboost 23 | Recommended Dunk Low size |
|---|---|
| US 8 | US 7.5 |
| US 9 | US 8.5 |
| US 10 | US 9.5 |
| US 11 | US 10.5 |
| US 12 | US 11.5 |
Frequently asked questions
Which runs bigger, the Adidas Ultraboost 23 or the Nike Dunk Low?
The Nike Dunk Low runs longer than the Adidas Ultraboost 23. The Ultraboost 23 is the snugger of the two, so you may want extra length going the other way.
If I wear a US 10 in the Ultraboost 23, what size is the Dunk Low?
Target a US 9.5 in the Dunk Low. A US 9 in the Ultraboost 23 maps to about US 8.5, and a US 11 to about US 10.5.
Is the Ultraboost 23 wider than the Dunk Low?
The Adidas Ultraboost 23 has a slightly wider toe box versus the Nike Dunk Low (wide vs standard). Forefoot room is one of the biggest reasons two shoes at the same length still feel different.
How do the Ultraboost 23 and Dunk Low compare on support and material?
The Ultraboost 23 pairs high arch support with a primeknit textile upper; the Dunk Low has low / flat support and a leather upper.
Try it: adjust the size and compare live
Verdict
The Adidas Ultraboost 23 runs true to size and has a slightly wider toe box compared to the Nike Dunk Low. If you wear a US 10 in the Ultraboost 23, your target size for the Dunk Low is US 9.5.
| Spec | Adidas Ultraboost 23 | Nike Dunk Low |
|---|---|---|
| Length Fit | True to Size | Runs Large (~½ size) |
| Toe Box Profile | Wide | Standard |
| Arch Support | High | Low / Flat |
| Upper Material | Primeknit Textile | Leather |