Wilson Pony League Fastpitch Softballs (1 Dozen) PONY LEAGUE PLAY Core: Compression Controlled Polycore: Polycore softballs do not break down during play as quickly as cork softballs making them the most consistent playing softballs available. WTA9075BSST:12 AGES:12 Up WTA9275BSST:11 AGES:11 Under Cover Material: Frequency Matched Optic Yellow, Leather, Red Stitch