Size  Chest Body Length Shoulder to Shoulder Sleeve Opening Neck Opening
Small 18" 28" 5 7/8" 7.5" 6 3/4"
Medium 20" 29" 6 7/8" 8" 6 3/4"
Large 22" 30" 7 3/8" 8.5" 7 3/4"
Extra Large  24" 31" 8 3/8" 9" 7 3/4"
2X Large 26" 32" 9 3/8" 9.5" 7 3/4"
3X Large 28" 33" 10 3/8" 10" 7 3/4"
4X Large 30" 34" 10 5/8" 10.5" 8 3/4"