Draft data: Fit verdict is not fully verified yet. Do not treat as final advice. See how we score fit.

Does the Nike Cortez Run Big or Small?

Runs Small Size up half a size — especially if average-to-wide feet
Consider sizing up. · confidence: medium

What size should you buy?

Interactive suggestion based on this model’s fit offset (+0.5 US). Always confirm with a retailer return policy.

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Width
Heritage narrow last; toe box is snug and does not stretch much
Break-in
Minimal length change; leather softens slightly but stays slim

Summary

Nike Cortez commonly runs short and narrow versus modern sneakers. Most wearers size up half a size; wide feet may still feel squeezed. Narrow feet can sometimes stay TTS for a locked vintage fit. Recent Cortez updates stay true to that slim heritage last.

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US / UK / EU / cm chart

General reference chart (not brand-official). US_M is this model’s primary system. Interactive tool above adjusts for this model’s fit offset; the table is crawlable reference.

USUKEUcm
65.53924.0
6.5639.524.5
76.54025.0
7.5740.525.5
87.54126.0
8.584226.5
98.542.527.0
9.594327.5
109.54428.0
10.51044.528.5
1110.54529.0
11.51145.529.5
1211.54630.0
1312.547.531.0

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