CHAMPRO Weighted Training Baseballs - Team Set - 6 oer set Champro Champro Weighted Training baseballs 6 oer set Set of 6 Training BaseballsFull grain leather coversRaised SeamsTraining Program includedThe Concept:Conditioning with weighted balls has been referred to as Overload Training. Many players agree that training with weighted balls can improve their velocity when playing with a regulation game ball. As with other types of weight trainings they strength his or her arm by training with progressively heavier balls.Each set contains 1 each: 7 oz, 8 oz.