Official standard size and weight - Official standard baseball training ball with approximately 9 inch circumference and 2.8 inch diameter. Designed for all official events and a variety of training needs. Durable construction and reliable performance - Built from a durable rubber and PVC blend for long-lasting use and dependable performance during frequent training sessions and repeat practice. Effective training with a fingerprint grip system - Innovative fingerprint marking system helps players learn and visualize grips. Clearly identifies common throws including four-seam fastball, two-seam fastball, curveball, and slider, enabling quick recognition and grip transitions. Aimed at accelerating progress for beginners. Left- and right-handed versatility - Grip design adapts to the grip of each player, making this ball suitable for both left-handed and right-handed athletes and supporting a wide range of training scenarios. Use scenarios - Beginner pitch development: practice identifying and mastering multiple grips to build variety in pitching. - Warm-up and bullpen sessions: rehearse different pitches before games to improve readiness and feel. - Coaching drills: demonstrate grips to players and track progress over time with a consistent training tool. Notes - Maintains the brand’s focus on official standards, material performance, and versatile training applications without adding extraneous features.