Lying flat down approx. size measurements:
3XB
Shoulder(seam line to seam line): 25.75 inches
Armpit to armpit(across chest): 30.75 inches
Sleeve(shoulder seam line to end of sleeve): 26 inches
Back body center length(bottom of collar to hem): 31.25 inches
4XLT
Shoulder(seam line to seam line): 26.75 inches
Armpit to armpit(across chest): 32.75 inches
Sleeve(shoulder seam line to end of sleeve): 29 inches
Back body center length(bottom of collar to hem): 34 inches