Baseball has been a sport for over one hundred years, and baseballs have seen a fascinating transformation since its inception. Now made of cork and yarn and covered with cow leather, the baseball was once made without regulation. Today, the baseball is a standardized piece of baseball equipment that cannot vary by size, weight or material and must remain the same regardless of the manufacturer. At any level of play, the baseball must meet certain standards of approval. Check your local league for your regulations and then check out our huge selection to get the one you need.