Champro C Grade CBB-200 Official League Cushion Cork Core Cover Baseballs - Available by the Dozen (1 Dozen) : Champro Baseballs - Champro C Grade Official League Cushion Cork Core Cover Baseballs - Available by the Dozen. Official League baseballPrecision molded cushion cork core. Metered tension 5% wool yarn. Full grain leather cover. High School practiceYouth game