Size  Chest Body Length Shoulder to Shoulder Sleeve Opening
Extra Small 17" 25" 15.5" 6"
Small 18" 26" 16" 6"
Medium 19.5" 28" 17.5" 6.5"
Large 21.5" 29" 19.5" 7"
Extra Large  23.5" 30" 21.5" 7.5"
2X Large 25.5" 31" 23.5" 8"
3X Large 27.5" 32" 25.5" 8.5"
Men's Tee Shirt Sizing Chart Diagram