Men’s size is: S M L XL XXL XXXL XXXXL
If Chest measures: 37-39 40-42 43-45 46-48 49-51 52-55 56-60
If Waist measures: 28-30 31-34 35-38 39-42 43-46 47-50 51-54
If Neck measures: 14-14.5 15-15.5 16-16.5 17-17.5 18-18.5 19-19.5 20-20.5
Customer Care: 1(800) 458-0600 (M-F, 6am-5pm PST)