Lying flat down approx. size measurements:
Small
Shoulder(seam line to seam line): 17.75 inches
Armpit to armpit(across chest): 21 inches
Sleeve(shoulder seam line to end of sleeve): 24.5 inches
Back body center length(bottom of collar to hem): 25 inches
XL
Shoulder(seam line to seam line): 20.5 inches
Armpit to armpit(across chest): 25.5 inches
Sleeve(shoulder seam line to end of sleeve): 26.25 inches
Back body center length(bottom of collar to hem): 28.25 inches
XXL
Shoulder(seam line to seam line): 21.5 inches
Armpit to armpit(across chest): 28 inches
Sleeve(shoulder seam line to end of sleeve): 26.75 inches
Back body center length(bottom of collar to hem): 30.25 inches