True-to-Size Millimeter Sizing Comparison
Avenger Work Boots Foundation CT vs Avenger Work Boots Framer CT
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 Foundation CT to see your calculated size in the Framer CT.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Foundation CT (US) | Internal Cavity | Framer CT Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 237 mm | US 4.5 | 100% | 0.0 mm |
| US 5 | 241 mm | US 5 | 100% | 0.0 mm |
| US 5.5 | 244 mm | US 5.5 | 100% | 0.0 mm |
| US 6 | 247 mm | US 6 | 100% | 0.0 mm |
| US 6.5 | 251 mm | US 6.5 | 100% | 0.0 mm |
| US 7 | 254 mm | US 7 | 100% | 0.0 mm |
| US 7.5 | 257 mm | US 7.5 | 100% | 0.0 mm |
| US 8 | 261 mm | US 8 | 100% | 0.0 mm |
| US 8.5 | 264 mm | US 8.5 | 100% | 0.0 mm |
| US 9 | 271 mm | US 9 | 100% | 0.0 mm |
| US 9.5 | 274 mm | US 9.5 | 100% | 0.0 mm |
| US 10 | 277 mm | US 10 | 100% | 0.0 mm |
| US 10.5 | 281 mm | US 10.5 | 100% | 0.0 mm |
| US 11 | 284 mm | US 11 | 100% | 0.0 mm |
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Frequently Asked Questions
How does the Foundation CT size compare to the Framer CT?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Foundation CT has an internal fit offset of 4mm compared to 4mm for the Framer CT.
Do these shoes fit wide feet comfortably?
The Foundation CT has a standard medium width profile, while the Framer CT is standard medium.