Men's
| Size | CGA Vests Chest Size (not including Hinge) | Flex Comp Vest Chest Size | Comp Vests & all Hinge models Chest Size |
| Teen | 28" - 32" | ||
| S | 32" - 36" | 34" - 36" | 34" - 37" |
| M | 36" - 40" | 36" - 40" | 37" - 40" |
| L | 40" - 44" | 40" - 44" | 40" - 43" |
| XL | 44" - 48" | 44" - 48" | 43" - 46" |
| 2XL | 48" - 52" | 48" - 52" | |
| 3XL | 52" - 56" | 52" - 56" |
Women's
| Size | CGA Vests and Melody Comp Vest Chest Size | Women's Size | All Other Comp Vests Chest Size | Women's Size |
| XS | 28" - 32" | 2 - 4 | 29" - 32" | 0 - 2 |
| S | 32" - 36" | 6 - 8 | 32" - 35" | 4 - 6 |
| M | 36" - 40" | 10 - 12 | 35" - 38" | 8 - 10 |
| L | 40" - 44" | 14 - 16 | 38" - 41 | 10 - 12 |
Kids' Vests
| Size | Weight |
| Infant | 0 - 30lbs |
| Child | 30 - 50lbs |
| Youth | 50 - 90lbs |
| Teen | 80 - 120lbs |
