Wilson A3915 Batters Helmet Number Decals come in sheets of 15. These batting helmet number decals are done in two colors with black numbers outlined on a larger grey background. The numbers will stand out on any color baseball batting helmet you may choose. Wilson number decals are great for batting helmets or other types of helmets where identification is important. You just peel and apply. Sold by the sheet with each number measuring 1 inch wide by 1.25 inches high and are permanent adhesive decals.