Description:Can load by sand ,ironsand ,sponge, cloth...Wall ball for throwing against a wall or straight up in the air; multiple works the core and helps build strength and .Made of durable high-quality PU leather , softer and durable .Tight, thick stitching ensures a securely closed and contained design.Loop on either side of stitching for gripping during use or easy storage.Specification:Material: PU LeatherColor: randomSize Chart:Diameter:30cm/11.81inchPackage Includes:1X Medicine BallNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!