Mens Buffalo Nickel Snaps.Premium Naked Leather Vest. Side Laces. Generous Inside Pocket & 2 Outside pockets. Available Plain or Braided Leather Runs Small, please add 2 inches to your chest measurement. The formula for a mans jacket or vest is: Chest size + 2 = your size. For example, if a person's chest size is 44 (or 43), according to the formula he should order size 46. Size up to 60