Men's Measurements ALPHA SIZE S M L XL 2XL 3XL 4XL NUMERIC SIZE 36 38 40 42 44 46 48 50 52 54 56 58 60 62 CHEST SIZE 34-36 36-38 38-40 40-42 42-44 44-46 46-48 48-50 50-52 52-54 54-56 56-58 58-60 60-62 MAX. WAIST 34½ 36½ 38½ 40½ 42½ 44½ 46½ 48½ 50½ 52½ 54½ 56½ 58½ 60½ RG - LENGTH 30" LEG INSEAM WITH STANDARD LENGTH TORSO, HEIGHT 5'7" - 5'10" LN - LENGTH 32" LEG INSEAM WITH LONGER LENGTH TORSO, HEIGHT 5'11" - 6'3"