These are The Size Spec.
S................ .M......................L.................XL
Shoulder to shoulder 19.1/2" 20.1/2" 21.1/2" 22"
Chest (armpit to armpit) 21" 23.1/2" 24" 25"
Sleeve (From Shoulder ) 9.3/4" 10" 10.1/4" 11"
Length (from under collar to Bottom) 27./12" 28./12" 29" 29"