SIA unisex apparel guide
Measurements are garment dimensions. For service teams between sizes, size up for layered shifts.
| size | chest in | length in |
|---|---|---|
| S | 18 | 28 |
| M | 20 | 29 |
| L | 22 | 30 |
| XL | 24 | 31 |
| 2XL | 26 | 32 |
| 3XL | 28 | 33 |
Size guide
Use the published garment measurements below to choose the best fit.