Train smarter with the SKLZ Practice Balls - 12 Pack. Designed to simulate game-time performance, each of these balls encourages visual acuity to increase batting performance. Engineered to keep you hitting hard without chasing down balls, each is designed for limited flight so you can stay focused on the task at hand. About SKLZ As an innovator in athletic training, SKLZ is the flagship brand of Pro Performance, a premier player in the development and marketing of training aids and equipment for basketball, football, soccer, baseball, softball, and golf. With products designed for players of all ages and skill levels, SKLZ focuses on finding innovative products and methods that help maximize athletic potential and meet goals. Located in San Diego, California, SKLZ and Pro Performance operate internationally, with their products found at major sporting goods retailers, specialty shops, and training centers everywhere.