Perfect for bolstering your throwing arm or your swing, the SKLZ(R) Premium Impact Baseballs are the same size as game-official baseballs so you can maintain your form as you practice strength-focused drills. The bright yellow, high-visibility color help players track ball flight to improve their hand-eye coordination, and its weight and density provides instant feedback on contact. Train With Purpose Durable, dent-resistant materials withstand hard hits for multiple seasons Weighted design are ideal for strengthening your swing or throwing arm High-visibility color helps players track ball flight to improve hand-eye coordination Exterior texture enhances grip for more accurate throwing Additional Details For indoor and outdoor use Sold in packs of six Manufacturer's Warranty: 1-year