Adidas Stan Smith vs Nike React Infinity Run 4 Sizing
Adidas Stan Smith vs Nike React Infinity Run 4: 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 Stan Smith and Nike React Infinity Run 4 take the same size?
Yes — keep your usual size. A US 10 in the Stan Smith is about a US 10 in the React Infinity Run 4.
How they compare
Adidas Stan Smith → Nike React Infinity Run 4: The Adidas Stan Smith runs true to size and has a slightly narrower toe box compared to the Nike React Infinity Run 4. Your US 10 in the Stan Smith translates to the same size in the React Infinity Run 4.
Nike React Infinity Run 4 → Adidas Stan Smith: The Nike React Infinity Run 4 runs true to size and has a slightly wider toe box compared to the Adidas Stan Smith. Your US 10 in the React Infinity Run 4 translates to the same size in the Stan Smith.
Spec comparison
| Spec | Adidas Stan Smith | Nike React Infinity Run 4 |
|---|---|---|
| Length Fit | True to Size | True to Size |
| Toe Box Profile | Standard | Wide |
| Arch Support | Low / Flat | High |
| Upper Material | Leather | Flyknit |
Size conversion: Adidas Stan Smith → Nike React Infinity Run 4
If you wear these US sizes in the Stan Smith, here is the size to order in the React Infinity Run 4.
| Your US size in Stan Smith | Recommended React Infinity Run 4 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 Stan Smith or the Nike React Infinity Run 4?
The Adidas Stan Smith and Nike React Infinity Run 4 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 Stan Smith, what size is the React Infinity Run 4?
Target a US 10 in the React Infinity Run 4. A US 9 in the Stan Smith maps to about US 9, and a US 11 to about US 11.
Is the Stan Smith wider than the React Infinity Run 4?
The Adidas Stan Smith has a slightly narrower toe box versus the Nike React Infinity Run 4 (standard vs wide). Forefoot room is one of the biggest reasons two shoes at the same length still feel different.
How do the Stan Smith and React Infinity Run 4 compare on support and material?
The Stan Smith pairs low / flat arch support with a leather upper; the React Infinity Run 4 has high support and a flyknit upper.
Try it: adjust the size and compare live
Verdict
The Adidas Stan Smith runs true to size and has a slightly narrower toe box compared to the Nike React Infinity Run 4. Your US 10 in the Stan Smith translates to the same size in the React Infinity Run 4.
| Spec | Adidas Stan Smith | Nike React Infinity Run 4 |
|---|---|---|
| Length Fit | True to Size | True to Size |
| Toe Box Profile | Standard | Wide |
| Arch Support | Low / Flat | High |
| Upper Material | Leather | Flyknit |