Features: By displaying clear field maps of each player's positioning, rotation, and backup, decision-making can be improved and errors reduced. Easy to read charts make it simple to guide directly from the book during the practice process. Very suitable for training, team gatherings, and on-site guidance. Very suitable for minors leagues, recreational sports, travel teams, and high schools. By mastering the basic of baseball, help children gains confidence and gains more playing time. Professor positioning, improving communication, cultivating confidence, and preparing players for game. Specifications: Component: Paper Size: about 20x17cm/7.87x6.69inch Package Includes: 1pc Baseball Defense Guide Tool Book note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.