Long Sleeve Button Front Shirts Henley Shirts, Sweatshirts, and Lab Coats Regular and Long Regular Long Regular Long Measure: Chest (In.) Neck Length (In.) Sleeve Length (In.) Chest (In.) Chest (In.) S 34 to 36 14 to 141.2 33 - 36 to 38 36 to 38 M 38 to 40 15 to 151.2 331.2 - 39 to 41 40 to 42 L 42 to 44 16 to 161.2 34 351.2 43 to 45 44 to 46 XL 46 to 48 17 to 171.2 341.2 36 471.2 to 491.2 48 to 50 2XL 50 to 52 18 to 181.2 35 36 52 to 54 52 to 54 3XL 54 to 56 19 to 191.2 35 36 561.2 to 581.2 -