True-to-Size Millimeter Sizing Comparison
J. Renee Faleece vs J. Renee Soncino
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 Faleece to see your calculated size in the Soncino.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Faleece (US) | Internal Cavity | Soncino Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 233 mm | US 3.5 | 27% | +6.2 mm |
| US 5 | 237 mm | US 3.5 | 74% | +2.2 mm |
| US 5.5 | 240 mm | US 4 | 74% | +2.2 mm |
| US 6 | 243 mm | US 4.5 | 63% | +3.2 mm |
| US 6.5 | 247 mm | US 5 | 74% | +2.2 mm |
| US 7 | 250 mm | US 5.5 | 74% | +2.2 mm |
| US 7.5 | 253 mm | US 6 | 63% | +3.2 mm |
| US 8 | 257 mm | US 6.5 | 74% | +2.2 mm |
| US 8.5 | 260 mm | US 6.5 | 90% | -0.8 mm |
| US 9 | 267 mm | US 7.5 | 74% | +2.2 mm |
| US 9.5 | 270 mm | US 8 | 74% | +2.2 mm |
| US 10 | 273 mm | US 8.5 | 63% | +3.2 mm |
| US 10.5 | 277 mm | US 9 | 74% | +2.2 mm |
| US 11 | 280 mm | US 9.5 | 74% | +2.2 mm |
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Frequently Asked Questions
How does the Faleece size compare to the Soncino?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Faleece has an internal fit offset of -0.08mm compared to -0.92mm for the Soncino.
Do these shoes fit wide feet comfortably?
The Faleece has a snug/narrow width profile, while the Soncino is snug/narrow.