We measured a selection these jackets and we also put the Medium on Huey and the XL on Dewey. We found the fit of these shirts to fit about like they shoulder when compared to normal men’s clothing. Z1Rs normal sizing chart shows they fit rather generous, but we didn’t think so. So my advice would be to choose the size you normally wear in men’s clothing.
If you know your suit coat size or you have a tape and can measure, please use the size chart below. You’ll want to pick a size that is big enough for both your chest and your belly. These vests taper from chest to waist by about 4”, so most people will find an easy fit even if they have a bit of a belly.
| SIze | Max Chest | Max Belly |
|---|---|---|
| Small | 40 | 36 |
| Medium | 42 | 38 |
| Large | 44 | 40 |
| XL | 46 | 42 |
| XXL | 48 | 44 |
| XXXL | 51 | 47 |
| XXXXL | 53 | 49 |
| XXXXXL | 55 | 51 |