Size chart references garment measurements, not body.
IN/CM
| Standard (inches) | XS | S | M | L | XL | 2XL | 3XL | 4XL |
| Chest (half measure) | 18.5 | 20 | 21 | 22 | 23 | 24.5 | 26.5 | 27.5 |
| Body | 25 | 25.5 | 26.5 | 27.5 | 28.5 | 29 | 30 | 31.5 |
| Sleeve | 28.5 | 30 | 30.5 | 31.5 | 32 | 33 | 33.5 | 34 |
| Fitted (inches) | XS | S | M | L | XL | 2XL |
| Chest (half measure) | 16.5 | 17.5 | 19 | 20 | 21 | 22.5 |
| Body | 25 | 26 | 26.5 | 27.5 | 28.5 | 29 |
| Sleeve | 26.5 | 27.5 | 28.5 | 29.5 | 30 | 31 |