True-to-Size Millimeter Sizing Comparison
Reebok Classic Leather vs Teva Original Universal
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 Classic Leather to see your calculated size in the Original Universal.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Classic Leather (US) | Internal Cavity | Original Universal Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 3 | 216 mm | US 4.5 | 0% | +17.5 mm |
| US 3.5 | 224 mm | US 4.5 | 0% | +9.5 mm |
| US 4 | 228 mm | US 4.5 | 35% | +5.5 mm |
| US 4.5 | 232 mm | US 4.5 | 83% | +1.5 mm |
| US 5 | 239 mm | US 5.5 | 83% | +1.5 mm |
| US 5.5 | 242 mm | US 6 | 83% | +1.5 mm |
| US 6 | 249 mm | US 7 | 83% | +1.5 mm |
| US 6.5 | 256 mm | US 8 | 83% | +1.5 mm |
| US 7 | 259 mm | US 8.5 | 83% | +1.5 mm |
| US 7.5 | 266 mm | US 9 | 83% | +1.5 mm |
| US 8 | 269 mm | US 9.5 | 83% | +1.5 mm |
| US 8.5 | 272 mm | US 10 | 83% | +1.5 mm |
| US 9 | 279 mm | US 11 | 83% | +1.5 mm |
| US 9.5 | 282 mm | US 11 | 82% | -1.5 mm |
| US 10 | 286 mm | US 11 | 35% | -5.5 mm |
| US 10.5 | 292 mm | US 11 | 0% | -11.5 mm |
| US 11 | 296 mm | US 11 | 0% | -15.5 mm |
| US 11.5 | 299 mm | US 11 | 0% | -18.5 mm |
| US 12 | 302 mm | US 11 | 0% | -21.5 mm |
| US 12.5 | 306 mm | US 11 | 0% | -25.5 mm |
| US 13 | 312 mm | US 11 | 0% | -31.5 mm |
| US 13.5 | 318 mm | US 11 | 0% | -37.5 mm |
| US 14 | 321 mm | US 11 | 0% | -40.5 mm |
| US 15 | 330 mm | US 11 | 0% | -49.5 mm |
| US 16 | 342 mm | US 11 | 0% | -61.5 mm |
| US 17 | 351 mm | US 11 | 0% | -70.5 mm |
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Frequently Asked Questions
How does the Classic Leather size compare to the Original Universal?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Classic Leather has an internal fit offset of -1.28mm compared to 0.2mm for the Original Universal.
Do these shoes fit wide feet comfortably?
The Classic Leather has a snug/narrow width profile, while the Original Universal is standard medium.