| ⌀ (mm) | ESP | EUR | US | |
|---|---|---|---|---|
| S | 16.8 - 17.2mm / 0.67″ | 13 - 14 | 53 - 54 | 6½ - 7 |
| M | 17.5 - 18.1mm / 0.70″ | 15 - 17 | 55 - 57 | 7½ - 8 |
| L | 18.4 - 19.1mm / 0.74″ | 18 - 20 | 58 - 60 | 8½ - 9½ |
| XL | 19.4 - 19.7mm / 0.77″ | 21 - 22 | 61 - 62 | 9¾ - 10 |
| XXL | 20.0 - 20.3mm / 0.79″ | 23 - 24 | 63 - 64 | 10½ - 11 |
| XS (choker) | 32cm / 12.0″ |
| S | 40cm / 15.7″ |
| M | 45cm / 17.7″ |
| L | 50cm / 19.7″ |
| XL | 55cm / 21.7″ |
| XXL | 60cm / 23.6″ |
*Measurements do not include the extension chain
| S | 16cm / 6.3″ |
| M | 17cm / 6.7″ |
| L | 18cm / 7.1″ |
| XL | 19cm / 7.5″ |
| XXL | 20cm / 7.9″ |
*Measurements do not include the extension chain
