RDX Medicine Ball Gym Abs Exercises| Leather Weighted Med Ball for Functional Training Fitness Crossfit| Great for Slams, Cleans, Throws, Crunches| Available in 5,8,10 and 12KG Outer material is Maya Hide leather 1.2mm thick with CN-3 backing Durable rex leather and triple hand stitched 8 panel design for enhanced grip Sure grip for safety and stability, centre chamber for balance and rotation Filled with Synthetic and natural fibers surrounding power core sand chamber Available in (5kg), (8kg), (10kg) and (12kg), Strong construction and well balanced