Both are Nike models, but lasts differ. Air Max 90 is labeled True to Size (True to size; half up if wide feet). Air Max 1 is True to Size (True to size; wide feet often go half up for the narrow toe box).
Air Max 90 is a strong TTS Nike reference — owner datasets align it with Jordan 1 and Dunk length, about a half size shorter feel than roomy AF1. Start with your usual Nike size; wide feet commonly half up for mudguard volume.
Air Max 1 is generally true to size in length versus other Nike lifestyle shoes, unlike AF1 which many size down. The lasting complaint is a narrower toe box — average/narrow feet TTS; wide feet often take half a size up. Do not apply AF1 sizing logic here.
Use the table below as a starting point from fit offsets — then confirm with try-on or returns. Width can matter more than length between these two.
| Air Max 90 | Air Max 1 | |
|---|---|---|
| Verdict | True to Size | True to Size |
| Advice | True to size; half up if wide feet | True to size; wide feet often go half up for the narrow toe box |
| Width | Can feel snug across mudguard panels for wide feet | Slimmer/narrower than AF1 and many AM90s — width is the main caveat |
| Break-in | Minimal | Light — mesh/suede softens in a wear or two; leather colorways take longer |
| Fit offset | +0 | +0 |
| Confidence | high | medium |
If the left model fits at the listed size, start here in the right model (chart + fit offsets).
| If Air Max 90 fits | Try Air Max 1 | Note |
|---|---|---|
| US 7 | US 7 | offset +0 |
| US 7.5 | US 7.5 | offset +0 |
| US 8 | US 8 | offset +0 |
| US 8.5 | US 8.5 | offset +0 |
| US 9 | US 9 | offset +0 |
| US 9.5 | US 9.5 | offset +0 |
| US 10 | US 10 | offset +0 |
| US 10.5 | US 10.5 | offset +0 |
| US 11 | US 11 | offset +0 |
| US 12 | US 12 | offset +0 |
Full Air Max 90 guide · Full Air Max 1 guide · Reverse compare · Open in converter