Jordan 4 Retro vs Nike React Infinity Run 4 Sizing
Jordan 4 Retro vs Nike React Infinity Run 4: side-by-side fit, toe-box width and the exact size to order in each — Nike React Infinity Run 4 runs bigger. Free interactive sizing comparison.
Should you size down from the Jordan 4 Retro to the Nike React Infinity Run 4?
Yes — size down a half size. If you wear a US 10 in the 4 Retro, order about a US 9.5 in the React Infinity Run 4.
How they compare
Jordan 4 Retro → Nike React Infinity Run 4: The Jordan 4 Retro runs about a half-size small, similar in width to the Nike React Infinity Run 4. If you wear a US 10 in the 4 Retro, your target size for the React Infinity Run 4 is US 9.5.
Nike React Infinity Run 4 → Jordan 4 Retro: The Nike React Infinity Run 4 runs true to size, similar in width to the Jordan 4 Retro. If you wear a US 10 in the React Infinity Run 4, your target size for the 4 Retro is US 10.5.
Spec comparison
| Spec | Jordan 4 Retro | Nike React Infinity Run 4 |
|---|---|---|
| Length Fit | Runs Small (~½ size) | True to Size |
| Toe Box Profile | Wide | Wide |
| Arch Support | Moderate | High |
| Upper Material | Nubuck/Mesh | Flyknit |
Size conversion: Jordan 4 Retro → Nike React Infinity Run 4
If you wear these US sizes in the 4 Retro, here is the size to order in the React Infinity Run 4.
| Your US size in 4 Retro | Recommended React Infinity Run 4 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 Jordan 4 Retro or the Nike React Infinity Run 4?
The Nike React Infinity Run 4 runs longer than the Jordan 4 Retro. The 4 Retro is the snugger of the two, so you may want extra length going the other way.
If I wear a US 10 in the 4 Retro, what size is the React Infinity Run 4?
Target a US 9.5 in the React Infinity Run 4. A US 9 in the 4 Retro maps to about US 8.5, and a US 11 to about US 10.5.
Is the 4 Retro wider than the React Infinity Run 4?
The Jordan 4 Retro has a similar toe box width versus the Nike React Infinity Run 4 (wide vs wide). Forefoot room is one of the biggest reasons two shoes at the same length still feel different.
How do the 4 Retro and React Infinity Run 4 compare on support and material?
The 4 Retro pairs moderate arch support with a nubuck/mesh upper; the React Infinity Run 4 has high support and a flyknit upper.
Try it: adjust the size and compare live
Verdict
The Jordan 4 Retro runs about a half-size small, similar in width to the Nike React Infinity Run 4. If you wear a US 10 in the 4 Retro, your target size for the React Infinity Run 4 is US 9.5.
| Spec | Jordan 4 Retro | Nike React Infinity Run 4 |
|---|---|---|
| Length Fit | Runs Small (~½ size) | True to Size |
| Toe Box Profile | Wide | Wide |
| Arch Support | Moderate | High |
| Upper Material | Nubuck/Mesh | Flyknit |