OFFICIAL SIZE & WEIGHT: Standard size adult baseball 1 pack, circumference: 9 inches, weight: 5 oz. Players can train effectively with these standard size and weight adult baseballs. The major league baseballs are the best chioce for high school, college and coaches to practice and training. Perfect Training balls for indoor or outdoor use.

PRACTICE BASEBALLS: The official league baseballs are made of durable synthetic leather cover, cork wood core, standard double-stitched. The high quality leather and standard 108 stitching is comfortable for grab and practice. The practice baseballs are suitable for youth leagues/adult to practice and taining.

HARD BASEBALLS: The practice baseball filled with cork and rubber. Hard baseball designed for adult for training and practice use. These high school baseballs are perfect for practice or warm up. The offical size and weight training baseball ball is suitable for college leagues player/adult to practice, it's also great for pitching, fielding and throwing practice.

UNMARKED BASEBALLS For DIY: The unmarked blank baseball design is great for you to DIY your own unique baseball, perfect for custom for autographs, logo, and ideas, it is also a nice gift choice suitable for college leagues/adult baseball leagues, friends and family.

GOOD SERVICE: We are determined to provide high quality baseballs for customers, if you have any questions about our baseballs, please feel free to let us know and we will answer you as soon as possible