Show off your game with the Spalding® NBA Replica Official Game Basketball and let the competition know you're shooting to win. This replication of the official NBA® game ball holds to the standard size and weight of the association with Commissioner Silver's facsimile signature. Durable composite leather offers an incredible feel and grip that will withstand both indoor and outdoor play, letting your rule the court of your choice. Adam Silver CommissionerSize:29.5"For indoor/outdoor playDurable composite leather construction for better feel and durabilityReplica of the official game ball of the NBAOfficial Size and Weight of the NBACommissioner Silver's facsimile signatureModel: 74875SpaldingBASKETBALL SIZING CHART:29.5" (size 7) ball suitable for men and boys 12 andolder28.5" (size 6) ball suitable for women and girls 9 and older and boys ages 9-1227.5" (size 5) ball suitable for ages 9 and under Official NBA size and weight: Size 7, 29.5" Performance composite cover Shipped inflated and game-ready Designed for indoor and outdoor play Recommended inflation is 8 PSI