True-to-Size Millimeter Sizing Comparison
New Balance Fresh Foam Arishi v4 vs Saucony Cohesion 17
Detailed size conversion chart, cavity measurements in millimeters, and crowd-sourced fit advice for choosing your perfect size.
Interactive Size Converter
Select what size you wear in the Fresh Foam Arishi v4 to see your calculated size in the Cohesion 17.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Fresh Foam Arishi v4 (US) | Internal Cavity | Cohesion 17 Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 229 mm | US 3.5 | 0% | +11.0 mm |
| US 5 | 233 mm | US 3.5 | 17% | +7.0 mm |
| US 5.5 | 236 mm | US 3.5 | 53% | +4.0 mm |
| US 6 | 239 mm | US 3.5 | 88% | +1.0 mm |
| US 6.5 | 243 mm | US 4 | 100% | 0.0 mm |
| US 7 | 246 mm | US 4.5 | 88% | +1.0 mm |
| US 7.5 | 249 mm | US 5 | 88% | +1.0 mm |
| US 8 | 253 mm | US 5.5 | 100% | 0.0 mm |
| US 8.5 | 256 mm | US 6 | 88% | +1.0 mm |
| US 9 | 263 mm | US 6.5 | 65% | -3.0 mm |
| US 9.5 | 266 mm | US 7 | 88% | +1.0 mm |
| US 10 | 269 mm | US 7.5 | 88% | +1.0 mm |
| US 10.5 | 273 mm | US 8 | 100% | 0.0 mm |
| US 11 | 276 mm | US 8.5 | 88% | +1.0 mm |
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Frequently Asked Questions
How does the Fresh Foam Arishi v4 size compare to the Cohesion 17?
The Cohesion 17 provides about 4mm more internal length than the Fresh Foam Arishi v4. We suggest ordering 1/2 size down in Cohesion 17. The Fresh Foam Arishi v4 has an internal fit offset of -4mm compared to 0mm for the Cohesion 17.
Do these shoes fit wide feet comfortably?
The Fresh Foam Arishi v4 has a standard medium width profile, while the Cohesion 17 is standard medium.