Sizing.
Nike Mens.
| Size | Chest | Waist |
| Small |
34-37" |
28-31" |
| Medium | 37-40" | 31-35" |
| Large | 40-44" | 35-38" |
| Extra Large | 44-48" | 38-42" |
| Extra Extra Large | 48-52" | 42-47" |
Under Armour Mens.
| Size | Chest | Waist |
| Small | 34-36" | 28-29" |
| Medium | 38-40" | 30-32" |
| Large | 42-44" | 34-36" |
| Extra Large | 46-48" | 38-40" |
| Extra Extra Large | 50-51" | 42-44" |
Womens.
| Size | Uk size |
| Extra Small | 4-6 |
| Small | 6-10 |
| Medium | 12-14 |
| Large | 16-18 |