REAL LEATHER WEIGHTED BASEBALL – Like other Premier Pitching accessories, our leather-weighted balls provide a true baseball feel during catch play and velocity building, helping to regulate strength and speed while improving your skills on the field. These heavy baseballs help you warm up faster and enhance your professional pitching abilities. VERSATILE UTILITY FOR ALL SKILL LEVELS – Premier Pitching training baseballs are available in 3 oz, 4 oz, 6 oz, 7 oz, 8 oz, and 11 oz weights, as well as in a set of all six combined. They are capable of withstanding high-intensity pitching training and can be used in a pitching machine. COMPACT & PORTABLE – Take our lightweight practice baseballs anywhere you go for a quick workout. They fit easily into your bag or suitcase and can be used in any baseball or softball velocity training. These are the perfect basic training tools for baseball pitching and developing fundamental throwing skills. SUITABLE FOR PROFESSIONALS AND BEGINNERS – The different weight levels of these baseballs are ideal for both beginners and experienced players who want to build strength while improving their throwing mechanics. They enhance your pitching mechanics and add variety to your fitness routine. CHOICE OF PRO ATHLETES – Our training baseballs are built to outlast the competition and endure countless practice sessions. They are perfect for a wide range of pitching drills and throwing progressions. We offer a 365-day manufacturer warranty on all Premier Pitching products.