Measurements:

Chest: X-Small: 34" Small: 36", Medium: 38", Large: 40" 

Shoulder: X-Small: 15", Small: 15.5", Medium: 15.75", Large:  16.25" 

Sleeve :X-Small:  22.5",  Small: 22.75", Medium: 23.25", Large: 23.5"

Length: X-small: 20", small: 20", medium: 20", large: 20"