Size  Chest Body Length Sleeve Opening
Extra Small 16" 27" 6 3/4"
Small 18" 28" 7 1/4"
Medium 20" 29" 7 3/4"
Large 22" 30" 8 1/4"
Extra Large  24" 31" 8 3/4"
2X Large 26" 32" 9 1/4"
3X Large 28" 33" 9 3/4"
Men's Tee Shirt Sizing Chart Diagram