Zone 3 Size Guide - Mens
| Size | Height (ft/in) | Weight (kg) | Chest (inches) |
| Small | 5'4" - 5'8" | 55 - 65 | 31 - 36 |
| Small Medium | 5'7" - 5'10" | 62 - 70 | 35 - 38 |
| Small Tall | 5'9" - 6'3" | 64 - 72 | 35 - 38 |
| Medium | 5'8" - 6'0" | 68 - 74 | 38 - 40 |
| Medium Tall | 5'9" - 6'3" | 68 - 78 | 38 - 40 |
| Medium Large | 5'8" - 6'2" | 75 - 82 | 40 - 42 |
| Large | 5'10" - 6'3" | 82 - 92 | 42 - 44 |
| X Large | 6'0" - 6'5" | 92 - 100 | 44 - 48 |
| XX Large | 6'0" - 6'5" | 97 - 115 | 46 - 50 |