Nike

InfinityRN 4 size guide

Size up 5mmMedium confidenceThird-party measured

Specs

Reference Label: 270mm
Insole Length: 259.9mm
Forefoot Width: 95.3mm
Fit Offset: -5mm

These values come from External review-site measurement (checked Oct 23, 2026); FitMeter did not measure them. All numbers refer to a 270mm label size and may differ for other sizes or genders. Report an error: [email protected]

Sources & Verification

Medium confidenceThird-party measuredVerified Oct 23, 2026

External review-site measurement

View measurement criteria

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