WILSON NCAA Killer Crossover Outdoor Basketball - Size 7 - 29.5", Red/White SIZES: Color variations available in 29.5" (boys age 12 and up), 28.5" (girls age 9 and up, and boys age 9-11), 27.5" (boys and girls age 8 and under) EXTENDED DURABLITY: A premium internal rubber construction provides excellent long-term durability and bounce. IMPROVED GRIP: A tacky, pebbled cover provides enhanced grip on all types of courts Deep Channels: Deeper channels between the panels of the ball allow for more grip points and better ball control when dribbling and shooting. All Surface Cover: A durable all-surface cover makes this ball suitable for play on any court surface.