Rubber Basketball is made of rubber.It's cheaper than leather basketball,but bounce better.People like playing rubber basketball Basketball, Rubber basketball, belongs ... 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 ...