COMPOSITE LEATHER MATERIAL: ZK microfiber composite cover that turns butter-soft after break-in SUPERIOR GRIP: Deep channel design for instant recognition along with symmetrical panels for precision play BUILT FOR PERFORMANCE: Rotationally balanced butyl bladder for ultimate air retention and nylon windings for excellent structural integrity OFFICIAL SIZE: Size 7, 29.5” HIGH SCHOOL APPROVED: NFHS (National Federation of State High School Association) approved INFLATION: Shipped inflated and we recommend 8 PSI INDOOR PLAY ONLY