The ZIVA Performance Wall Ball is perfect for improving strength, speed and everything in between. The commercial-grade vinyl and PVC with stitching is built to last through light or rigorous workouts, and the padded construction works great for high-speed training. The heavy-duty fiber core is weighted with sand to help you push yourself in your workout. ZIVA Performance Wall Ball Black, 6 Lbs - Hand Exer. Equip. at Academy Sports