Club Obi Wan

Hi All _ I just looked at the "Spec Chart" for the Indy jacket on the US Wings websire and started getting very confused about the different measurements. I'd be grateful for a tutorial on where the measurements on the jacket are rtaken from each of the bloew. PM is fine dso as not to ties up the site. Cheers - Feng

- Chest (In half)
- Sweep
- Cross Shoulder
- Cross back
- Cross chest

I feel silly asking but I really sdtarted to get all confused about these.