... than leather basketball,but bounce better.People like playing rubber basketball Basketball, Rubber basketball, belongs to Sports ball. Basketball is a very ... are glad to play basketball for training, too. (1) Material: rubber of good quality(2) Official Size & Weight: 7#, 6#, 5 ... #, 3#, 2#, 1#(3) Bladder: made of good quality rubber/butyl, and wound with strong fabric to enhance and protect ...