Champion Sports Weighted Training Baseball Set with Nylon Carrying Case, Set of 9 WEIGHTED: Ideal for young players learning how to pitch, the Champion Sports Weighted Baseball Set allows each pitcher the ability to gradually increase arm strength through a four to 12 ounce range MULTIPLE COLORS: Choose from nine 9 inch baseballs with a multi colored assortment of bright and bold gear so that players can easily identify which weight they're practicing with as they train TRAINING: Include this valuable baseball set in your youth league team's equipment so that they're practicing with official size balls and building the necessary skills to pitch and throw out runners OFFICIAL SIZE: Measuring nine inches in circumference, each player can sharpen skills with official size baseballs so that they're prepared pitch after pitch, strike after strike, game after game NYLON CARRY BAG: Each set comes with a durable nylon carry bag that keeps everything organized for easy transport to and from the ballpark; perfect for youth league baseball and recreational leagues