The Wilson i-COR volleyball line is designed to fit any team's needs. All balls are cured in a spherical mold to make each ball perfectly round and extremely durable providing better performance and more win in every game. MORE I-COR, MORE POWER, MORE CONTROL. This revolutionary indoor game ball utilizes Wilson's patented I-COR technology giving it unbeatable performance on the court. The innovative I-COR technology produces an extraordinary ball that enhances player control, while giving a player all the power they need. I-COR is the force to be reckoned with on the court.