Chest:
Measure under arms around the fullest part of the chest. Be sure to keep tape level across back and comfortably loose.
 
SIZE CHEST FRONT LENGTH SLEEVE LENGTH
S 37" 28" 26"
M 40" 29" 26.5"
L 43" 30" 27"
XL 47" 31" 27.5"
2XL 51" 32" 28"