Flex Full-Zip Size Chart
These really stretch! For a looser, more standard zip-up fit, we recommend your usual sizing. For an athletic fit, try a size or two down.
| Chest | Length | |
| XS | up to 37" | 27" |
| S | 34-39" | 27.5" |
| M | 36-41" | 28" |
| L | 38-43" | 28.5" |
| XL | 40-45" | 29" |
| 2XL | 42-47" | 29.5" |