Men's Measurements MENS SIZES S M L XL 2XL 3XL 4XL 5XL CHEST SIZE 34½-38 38½-42 42½-46 46½-50 50½-53 53½-56 56½-59 59½-62 NECK 13¾-14½ 14¾-15½ 15¾-16½ 16¾-17½ 17¾-18½ 18¾-19½ 19¾-20½ 20¾-21½ BACK LENGTH SS Regular Back Length    SSL Plus 4"