The sizes correspond to a smaller size in the US market, so US customers should order a size up.
Size guide
Inches
| SIZE | LENGTH | CHEST CIRCUMFRANCE | SLEEVE LENGTH |
| S | 27 ¼ | 31 - 34 | 8 ⅛ |
| M | 28 ¼ | 35 - 38 | 8 ½ |
| L | 29 ⅛ | 39 - 41 | 8 ⅞ |
| XL | 29 ⅞ | 42 - 45 | 8 ⅞ |
| 2XL | 30 ¾ | 46 - 48 | 9 ¼ |
| 3XL | 31 ½ | 49 - 51 | 9 ⅝ |
| 4XL | 32 ¼ | 52 - 54 | 9 ⅝ |
| 5XL | 33 | 55 - 57 | 9 ¾ |