True-to-Size Millimeter Sizing Comparison
Comfortiva Posie - Soft Spots vs Comfortiva Tatianna - Soft Spots
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 Posie - Soft Spots to see your calculated size in the Tatianna - Soft Spots.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Posie - Soft Spots (US) | Internal Cavity | Tatianna - Soft Spots Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 232 mm | US 4.5 | 90% | +0.9 mm |
| US 5 | 236 mm | US 5 | 90% | +0.9 mm |
| US 5.5 | 239 mm | US 5.5 | 90% | +0.9 mm |
| US 6 | 242 mm | US 6 | 90% | +0.9 mm |
| US 6.5 | 246 mm | US 6.5 | 90% | +0.9 mm |
| US 7 | 249 mm | US 7 | 90% | +0.9 mm |
| US 7.5 | 252 mm | US 7.5 | 90% | +0.9 mm |
| US 8 | 256 mm | US 8 | 90% | +0.9 mm |
| US 8.5 | 259 mm | US 8.5 | 90% | +0.9 mm |
| US 9 | 266 mm | US 9 | 90% | +0.9 mm |
| US 9.5 | 269 mm | US 9.5 | 90% | +0.9 mm |
| US 10 | 272 mm | US 10 | 90% | +0.9 mm |
| US 10.5 | 276 mm | US 10.5 | 90% | +0.9 mm |
| US 11 | 279 mm | US 11 | 90% | +0.9 mm |
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Frequently Asked Questions
How does the Posie - Soft Spots size compare to the Tatianna - Soft Spots?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Posie - Soft Spots has an internal fit offset of -0.84mm compared to 0.04mm for the Tatianna - Soft Spots.
Do these shoes fit wide feet comfortably?
The Posie - Soft Spots has a snug/narrow width profile, while the Tatianna - Soft Spots is roomy/wide.