Men's Measurements ALPHA SIZES S M L XL 2XL 3XL 4XL 5XL NECK 13¾-14½ 14¾-15½ 15¾-16½ 16¾-17½ 17¾-18½ 18¾-19½ 19¾-20½ 20¾-21½ CHEST SIZE 34½-38 38½-42 42½-46 46½-50 50½-53 53½-56 56½-59 59½-62 MAX WAIST 36 40 44 48 51½ 55 58½ 62 SLEEVE - RG 34¼ 34¾ 35¼ 35¾ 36¼ 36¾ 37¼ 37¾ SLEEVE - LN 35¾ 36¼ 36¾ 37¼ 37¾ 38¼ 38¾ 39¼ SLEEVE - XLN 37¼ 37¾ 38¼ 38¾ 39¼ 39¾ 40¼ 40¾ BACK LENGTH RG REGULAR BACK LENGTH LN PLUS "1½" XLN PLUS "4"