Forge Original Chest Size Guide (inches and cm)
| Size | CM | Inches | European | Collar |
| 2XL | 119 -125 | 46" - 48" | 6 | 18.5" |
| 3XL | 127 -132 | 50" - 52" | 7 | 19.5" |
| 4XL | 135 - 142 | 54" - 56" | 8 | 20.5" |
| 5XL | 145 - 152 | 58" - 60" | 9 | 21.5" |
| 6XL | 155 - 163 | 62" - 64" | 10 | 22.5" |
| 7XL | 164 - 174 | 66" - 68" | 11 | 23.5" |
| 8XL | 175 - 183 | 70" - 72" | 12 | 24.5" |
