The Wilson NCAA Street Shot 29.5 is for those looking to improve their game at the park or in the driveway. The rubber cover is designed specifically for outdoor play. The cover features Total Grip Technology which enhances both the grip and the softness. This creates more control while shooting dribbling and passing. The Pressure Lock Bladder improves air retention and helps retain the shape of the basketball. The bladder also increases the durability and life span of the ball. Size 28.5 is the recommended size for women ages 9 and up and men ages 9-11.