It's fully adjustable, but it's best to go one size up if you're unsure or between sizes since it can be made smaller.
| SIZE | WAISTLINE (CM)(INCH) | WEIGHT (KG) |
| S | 60-70 (23.62" - 27.56") | 27-39 |
| M | 70-75 (27.56" - 29.53") | 40-49 |
| L | 75-80 (29.53" - 31.50") | 50-59 |
| XL | 80-85 (31.50" - 33.46") | 60-70 |
| 2XL | 85-95 (33.46" - 37.40") | 69-84 |
| 3XL | 95-118 (37.40" - 46.45") | 85-150 |
