| BC3901 | XS | S | M | L | XL | 2XL | 3XL |
| Body Length | 26 1/2 | 27 3/4 | 29 | 30 | 31 | 32 | 33 |
| Body Length Tolerance | +/- 1/2 | +/- 1/2 | +/- 1/2 | +/- 1/2 | +/- 1/2 | +/- 1/2 | +/- 1/2 |
| Chest Tolerance | +/- 1/2 | +/- 1/2 | +/- 1/2 | +/- 1/2 | +/- 1/2 | +/- 1/2 | +/- 1/2 |
| Chest Width (Laid Flat) | 18 1/2 | 19 1/2 | 20 1/2 | 21 1/2 | 22 3/4 | 24 | 25 1/4 |