International Size Reference
| Collar cm | Collar inches |
| 38 | 15 |
| 39 | 15 1/2 |
| 40 | 15 3/4 |
| 41 | 16 |
| 42 | 16 1/2 |
| 43 | 17 |
| 44 | 17 1/2 |
| 45 | 17 3/4 |
| 46 | 18 |
These tables offer rough measurements, allowing for slight variations due to fabric qualities, seasonal fits, and unique wash effects. For precise comparisons, consider consulting another Ploumanac'h piece.