Size  Chest Body Length Shoulder to Shoulder Sleeve Opening
Medium 38-40" 31" 17 1/2" 7 1/2"
Large 42-44" 32" 19" 8"
Extra Large  46-48" 33" 20 1/2" 8 1/2"
2X Large 50-52" 34" 22" 9"
Men's Tee Shirt Sizing Chart Diagram