i would day 5, but inseam is under jacket and for pants that means length, but in the diagram it shows its leg length. compare the arm length to arm lengths on other charts
It's not 5, that is arm length. They don't have the length of the jacket on that list. It wouldn't be hard to figure out what size you would want, just look at the rest of the dimensions and figure out how big you want it. Also, Orage has different lengths for each jacket, some are tall fit (shaper), some are reg. fit (Casabon's jacket).