True-to-Size Millimeter Sizing Comparison
Frye Harness 12R vs Frye Melanie Slip On
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 Harness 12R to see your calculated size in the Melanie Slip On.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Harness 12R (US) | Internal Cavity | Melanie Slip On Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 3.5 | 244 mm | US 4 | 88% | -1.0 mm |
| US 4 | 247 mm | US 4.5 | 100% | 0.0 mm |
| US 4.5 | 251 mm | US 5 | 88% | -1.0 mm |
| US 5 | 254 mm | US 5.5 | 88% | -1.0 mm |
| US 5.5 | 257 mm | US 6 | 100% | 0.0 mm |
| US 6 | 261 mm | US 6.5 | 88% | -1.0 mm |
| US 6.5 | 264 mm | US 7 | 65% | +3.0 mm |
| US 7 | 271 mm | US 7.5 | 88% | -1.0 mm |
| US 7.5 | 274 mm | US 8 | 88% | -1.0 mm |
| US 8 | 277 mm | US 8.5 | 100% | 0.0 mm |
| US 8.5 | 281 mm | US 9 | 88% | -1.0 mm |
| US 9 | 284 mm | US 9.5 | 88% | -1.0 mm |
| US 9.5 | 287 mm | US 10 | 100% | 0.0 mm |
| US 10 | 291 mm | US 10.5 | 88% | -1.0 mm |
| US 10.5 | 294 mm | US 11 | 88% | -1.0 mm |
| US 11 | 297 mm | US 11.5 | 100% | 0.0 mm |
| US 11.5 | 301 mm | US 12 | 88% | -1.0 mm |
| US 12 | 304 mm | US 12.5 | 88% | -1.0 mm |
| US 12.5 | 307 mm | US 13 | 100% | 0.0 mm |
| US 13 | 311 mm | US 14 | 76% | +2.0 mm |
| US 14 | 317 mm | US 14 | 53% | -4.0 mm |
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Frequently Asked Questions
How does the Harness 12R size compare to the Melanie Slip On?
The Melanie Slip On is about 4mm shorter than the Harness 12R. We suggest ordering 1/2 size up in Melanie Slip On. The Harness 12R has an internal fit offset of 4mm compared to 0mm for the Melanie Slip On.
Do these shoes fit wide feet comfortably?
The Harness 12R has a standard medium width profile, while the Melanie Slip On is standard medium.