A basket ball can be made of genuine leather, or made of high quality hygroscopic PU leather, made of high quality PU leather, rubber or PVC, or a combination of these materials, however, PU leather is the most common material for a basket ball.
Balls must be perfectly round, they must be bounce well. No balls that are misshaped. No air leaks.
The outlines of print or pattern must be sharp, no cross colour stain, no gaps among them.
If a ball is with a pump, the pumps should not be cheaply made, not broken pieces and have needles included