Adidas Ultraboost 23 vs New Balance 327 Sizing
Adidas Ultraboost 23 vs New Balance 327: side-by-side fit, toe-box width and the exact size to order in each — they fit the same length. Free interactive sizing comparison.
Do the Adidas Ultraboost 23 and New Balance 327 take the same size?
Yes — keep your usual size. A US 10 in the Ultraboost 23 is about a US 10 in the 327.
How they compare
Adidas Ultraboost 23 → New Balance 327: The Adidas Ultraboost 23 runs true to size and has a slightly wider toe box compared to the New Balance 327. Your US 10 in the Ultraboost 23 translates to the same size in the 327.
New Balance 327 → Adidas Ultraboost 23: The New Balance 327 runs true to size and has a slightly narrower toe box compared to the Adidas Ultraboost 23. Your US 10 in the 327 translates to the same size in the Ultraboost 23.
Spec comparison
| Spec | Adidas Ultraboost 23 | New Balance 327 |
|---|---|---|
| Length Fit | True to Size | True to Size |
| Toe Box Profile | Wide | Standard |
| Arch Support | High | Low / Flat |
| Upper Material | Primeknit Textile | Mesh/Suede |
Size conversion: Adidas Ultraboost 23 → New Balance 327
If you wear these US sizes in the Ultraboost 23, here is the size to order in the 327.
| Your US size in Ultraboost 23 | Recommended 327 size |
|---|---|
| US 8 | US 8 |
| US 9 | US 9 |
| US 10 | US 10 |
| US 11 | US 11 |
| US 12 | US 12 |
Frequently asked questions
Which runs bigger, the Adidas Ultraboost 23 or the New Balance 327?
The Adidas Ultraboost 23 and New Balance 327 fit the same in length — both are true to size — so you can keep your usual size moving between them.
If I wear a US 10 in the Ultraboost 23, what size is the 327?
Target a US 10 in the 327. A US 9 in the Ultraboost 23 maps to about US 9, and a US 11 to about US 11.
Is the Ultraboost 23 wider than the 327?
The Adidas Ultraboost 23 has a slightly wider toe box versus the New Balance 327 (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 327 compare on support and material?
The Ultraboost 23 pairs high arch support with a primeknit textile upper; the 327 has low / flat support and a mesh/suede 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 New Balance 327. Your US 10 in the Ultraboost 23 translates to the same size in the 327.
| Spec | Adidas Ultraboost 23 | New Balance 327 |
|---|---|---|
| Length Fit | True to Size | True to Size |
| Toe Box Profile | Wide | Standard |
| Arch Support | High | Low / Flat |
| Upper Material | Primeknit Textile | Mesh/Suede |