Rubber basketball size: 7#, 6#, 5#, 3#, 2#, 1# surface: normal, skived, foam skived weight:standard or required Rubber basketballAttribution: better bounce, strong elasticity, colorful printDescription: rubber material , basketball with normal,skived,foam skived surfaceBladder: made of good quality rubber/butyl, and wound with strong fabric to enhance and protectSize 7, size 6, size 5, size 3, ...