The ball's material is natural rubber, there are all kinds of colors and beautiful artwork, and it is suitable for children. SpecificationsManufactured for Dallas Mavericks, rubber cover, polyester winding, rubber bladder, official size and weightManufactured for Dallas Mavericks(1) Material: rubber of good quality.(2) Official Size & Weight: 7#, 6#, 5#, 3#, 2#, 1#.(3) Bladder: made of good ...