True-to-Size Millimeter Sizing Comparison
Franco Sarto Cason Loafer vs Franco Sarto Frankie Wedge Pump
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 Cason Loafer to see your calculated size in the Frankie Wedge Pump.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Cason Loafer (US) | Internal Cavity | Frankie Wedge Pump Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 234 mm | US 5 | 61% | +3.3 mm |
| US 5 | 238 mm | US 5.5 | 73% | +2.3 mm |
| US 5.5 | 241 mm | US 6 | 73% | +2.3 mm |
| US 6 | 244 mm | US 6.5 | 61% | +3.3 mm |
| US 6.5 | 248 mm | US 7 | 73% | +2.3 mm |
| US 7 | 251 mm | US 7.5 | 73% | +2.3 mm |
| US 7.5 | 254 mm | US 8 | 61% | +3.3 mm |
| US 8 | 258 mm | US 8.5 | 73% | +2.3 mm |
| US 8.5 | 261 mm | US 8.5 | 92% | -0.7 mm |
| US 9 | 268 mm | US 9.5 | 73% | +2.3 mm |
| US 9.5 | 271 mm | US 10 | 73% | +2.3 mm |
| US 10 | 274 mm | US 10.5 | 61% | +3.3 mm |
| US 10.5 | 278 mm | US 11 | 73% | +2.3 mm |
| US 11 | 281 mm | US 11 | 92% | -0.7 mm |
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Frequently Asked Questions
How does the Cason Loafer size compare to the Frankie Wedge Pump?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Cason Loafer has an internal fit offset of 0.52mm compared to -0.16mm for the Frankie Wedge Pump.
Do these shoes fit wide feet comfortably?
The Cason Loafer has a roomy/wide width profile, while the Frankie Wedge Pump is snug/narrow.