| Size Name | System | Outer Belt* | Inner Belt (Length) |
| S | inches | 32 - 35 | 40 |
| cm | 81 - 89 | 102 | |
| M | inches | 36 - 39 | 44 |
| cm | 91.4 - 99 | 112 | |
| L | inches | 40 - 43 | 47 |
| cm | 101.6 - 109 | 120 | |
| XL | inches | 44 - 47 | 50 |
| cm | 110 - 118 | 128 |
* We recommend you use the outer belt dimensions for sizing purposes