1.Strictly Official Standard Our pitch training baseballs are carefully designed with official standard size and weighing about 9 inches in circumference and 2.8 inches in diameter, making them perfect for all official game occasions and various training needs. 2.Excellent resilience Improve your pitching skills with this highquality training baseball made from a combination of rubber core and durable PVC outer shell. Designed to deliver performance and last through intense training and frequent use, this baseball is a must have for any budding pitcher. 3.SPEED LEARNING Featuring a unique colorcoded fingerprint system that visually teaches the grip for fastballs, curveballs, sliders and more. 4.Multifunctional helper Whether left or right handed, this pitch training baseball a versatile and inclusive training experience. The gripfriendly fingerprints are designed to adapt to each player's grip and improve skills for all player levels.