Size  Chest Body Length Shoulder to Shoulder Sleeve Opening
Small 19" 27" 16.5" 6.125"
Medium 20" 28" 17.5" 6.5"
Large 21" 29" 18.5" 6.875"
Extra Large  22.5" 30" 19.5" 7.25"
2X Large 24" 31" 20.5" 7.625"
3X Large 25.5" 32" 21.5" 8"
4X Large 27" 33" 22.5" 8.375"
Men's Tee Shirt Sizing Chart Diagram