For some people, when they flex, their sleeves fall off. When I flex, my sleeves definitely stay on.
Size guide
| LENGTH (inches) | WIDTH (inches) | CHEST (inches) | |
| S | 28 | 18 | 34-37 |
| M | 29 | 20 | 38-41 |
| L | 30 | 22 | 42-45 |
| XL | 31 | 24 | 46-49 |
| 2XL | 32 | 26 | 50-53 |
| 3XL | 33 | 28 | 54-57 |
| 4XL | 34 | 30 | 58-61 |
