True-to-Size Millimeter Sizing Comparison
Crocs Work Work Bistro (Unisex) vs Reebok Classic Nylon
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 Work Bistro (Unisex) to see your calculated size in the Classic Nylon.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Work Bistro (Unisex) (US) | Internal Cavity | Classic Nylon Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 7 | 271 mm | US 8 | 76% | -2.0 mm |
| US 7.5 | 274 mm | US 8.5 | 88% | -1.0 mm |
| US 8 | 277 mm | US 9 | 88% | -1.0 mm |
| US 8.5 | 281 mm | US 9.5 | 76% | -2.0 mm |
| US 9 | 284 mm | US 10 | 88% | -1.0 mm |
| US 9.5 | 287 mm | US 10.5 | 88% | -1.0 mm |
| US 10 | 291 mm | US 11 | 76% | -2.0 mm |
| US 10.5 | 294 mm | US 11.5 | 88% | -1.0 mm |
| US 11 | 297 mm | US 12 | 88% | -1.0 mm |
| US 11.5 | 301 mm | US 12.5 | 76% | -2.0 mm |
| US 12 | 304 mm | US 13 | 88% | -1.0 mm |
| US 12.5 | 307 mm | US 14 | 76% | +2.0 mm |
| US 13 | 311 mm | US 14 | 76% | -2.0 mm |
| US 14 | 317 mm | US 14 | 5% | -8.0 mm |
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Frequently Asked Questions
How does the Work Bistro (Unisex) size compare to the Classic Nylon?
The Classic Nylon is about 8mm shorter than the Work Bistro (Unisex). We suggest ordering 1 full size up in Classic Nylon. The Work Bistro (Unisex) has an internal fit offset of 4mm compared to -4mm for the Classic Nylon.
Do these shoes fit wide feet comfortably?
The Work Bistro (Unisex) has a roomy/wide width profile, while the Classic Nylon is standard medium.