| Size | Chest Circumference | |
| in | cm | |
| Men's Small | 34.5 - 37 | 88 - 94 |
| Men's Medium | 37 - 42.5 | 94 - 108 |
| Men's Large | 42.5 - 46.5 | 108 - 118 |
| Size | Chest Circumference | |
| in | cm | |
| Women's Small | 31.5 - 35 | 80 - 89 |
| Women's Medium | 35 - 38.8 | 89 - 98 |
| Women's Large | 38.5 - 42.5 | 98 - 108 |