Size  Chest Neck Shoulder to Shoulder
Small 34" - 36" 14" - 14.5" 32" - 33"
Medium 38" - 40" 15" - 15.5" 33" - 34"
Large 42" - 44" 16" - 16.5" 34" - 35"
Extra Large  46" - 48" 17" - 17.5" 35" - 36"
2X Large 50" - 52" 18" - 18.5" 36" - 37"
Men's Tee Shirt Sizing Chart Diagram